Examples with solutions for Simplifying and Combining Like Terms: One sided equations

Exercise #1

2a+3a+45a=0 2a+3a+45a=0

a=? a=\text{?}

Video Solution

Step-by-Step Solution

To solve the equation 2a+3a+45a=0 2a + 3a + 45a = 0 , follow these steps:

  • Step 1: Combine Like Terms.

Add the coefficients of a a :

2+3+45=50 2 + 3 + 45 = 50

  • Step 2: Substitute and Simplify.

This simplifies the equation to:

50a=0 50a = 0

  • Step 3: Solve for a a .

To find a a , divide both sides of the equation by 50:

a=050 a = \frac{0}{50}

a=0 a = 0

Therefore, the solution to the problem is a=0 a = 0 .

Answer

0 0

Exercise #2

7m+3m40m=0 7m+3m-40m=0

m=? m=\text{?}

Video Solution

Step-by-Step Solution

To solve this problem, we'll proceed with the following steps:

  • Step 1: Combine like terms of the given equation.
  • Step 2: Solve for the variable m m .

Now, let's work through these steps:

Step 1: Combine like terms:
We start with the equation 7m+3m40m=0 7m + 3m - 40m = 0 .
Combining these like terms entails adding or subtracting the coefficients of m m :

(7+340)m=0 (7 + 3 - 40)m = 0
Calculate the sum and difference of these coefficients:
(1040)m=0 (10 - 40)m = 0

This simplifies to:
30m=0 -30m = 0

Step 2: Solve for m m :
To isolate m m , divide both sides by 30-30:
m=030 m = \frac{0}{-30}

Calculate the right-hand side:

m=0 m = 0

Therefore, the solution to the problem is m=0 m = 0 . This corresponds to choice 3 from the provided answer options.

Answer

0

Exercise #3

7x+4x+5x=0 7x+4x+5x=0

x=? x=\text{?}

Video Solution

Step-by-Step Solution

Let's combine all the x terms together:

7x+4x+5x=11x+5x=16x 7x+4x+5x=11x+5x=16x

The resulting equation is:

16x=0 16x=0

Now let's divide both sides by 16:

16x16=016 \frac{16x}{16}=\frac{0}{16}

x=016=0 x=\frac{0}{16}=0

Answer

0 0

Exercise #4

a+7+3a15=0 a+7+3a-15=0

a=? a=\text{?}

Video Solution

Step-by-Step Solution

To solve the linear equation a+7+3a15=0 a + 7 + 3a - 15 = 0 , we follow these steps:

  • Step 1: Combine like terms.
  • Step 2: Simplify the equation.
  • Step 3: Solve for a a .

Let's execute each step:

Step 1: Combine like terms.
We have 1a+3a=4a 1a + 3a = 4a . The equation becomes:

4a+715=0 4a + 7 - 15 = 0

Step 2: Simplify the equation.
Combine the constants 7 7 and 15-15:

4a8=0 4a - 8 = 0

Step 3: Solve for a a .
Add 8 to both sides to isolate the term with a a :

4a=8 4a = 8

Divide both sides by 4 to solve for a a :

a=84=2 a = \frac{8}{4} = 2

Therefore, the solution to the equation is a=2 a = 2 .

Answer

2

Exercise #5

b+2b+4=0 b+2b+4=0

b=? b=\text{?}

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Simplify the equation by combining like terms.
  • Step 2: Isolate the variable b b on one side of the equation.
  • Step 3: Solve for the value of b b .

Now, let's work through these steps:
Step 1: Combine the terms b b and 2b 2b to simplify the equation:
b+2b+4=0 b + 2b + 4 = 0 becomes 3b+4=0 3b + 4 = 0 .

Step 2: Isolate the variable b b by subtracting 4 from both sides:
3b+44=04 3b + 4 - 4 = 0 - 4 simplifies to 3b=4 3b = -4 .

Step 3: Solve for b b by dividing both sides by 3:
b=43 b = \frac{-4}{3} .

The solution to the problem is b=113 b = -1\frac{1}{3} .

Therefore, choice 4 is the correct option: 113 -1\frac{1}{3} .

Answer

113 -1\frac{1}{3}

Exercise #6

x+8+3x4=0 x+8+3x-4=0

x=? x=\text{?}

Video Solution

Step-by-Step Solution

To solve the linear equation x+8+3x4=0 x + 8 + 3x - 4 = 0 , follow these steps:

  • Step 1: Combine like terms.
    Combine the terms involving x x , specifically x+3x=4x x + 3x = 4x .
    Combine the constant terms, specifically 84=4 8 - 4 = 4 .
    The equation becomes 4x+4=0 4x + 4 = 0 .
  • Step 2: Isolate the variable x x .
    Subtract 4 from both sides to get 4x=4 4x = -4 .
  • Step 3: Solve for x x .
    Divide both sides by 4 to solve for x x , resulting in x=1 x = -1 .

Therefore, the solution to the equation is x=1 x = -1 .

Answer

1-

Exercise #7

5+3+x+2x+1=0 5+3+x+2x+1=0

x=? x=\text{?}

Video Solution

Step-by-Step Solution

Let's solve the equation step by step:

  • First, we identify the terms in the equation: 55, 33, xx, 2x2x, and 11.
  • Combine like terms on the left side of the equation:
    • The constant terms: 5+3+1=95 + 3 + 1 = 9.
    • The terms with xx: x+2x=3xx + 2x = 3x.
  • Substitute back into the equation to get 9+3x=09 + 3x = 0.
  • Isolate the term containing xx by subtracting 9 from both sides: 3x=93x = -9.
  • Solve for xx by dividing both sides by 3: x=93x = \frac{-9}{3}.
  • Simplify the fraction: x=3x = -3.

Therefore, the solution to the equation is x=3 x = -3 .

Answer

3-

Exercise #8

70x+30x+10+1+10x=0 70x+30x+10+1+10x=0

x=? x=\text{?}

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Combine all like terms in the equation.
  • Step 2: Simplify to find the value of x x .

Now, let's work through each step:
Step 1: The equation is 70x+30x+10+1+10x=0 70x + 30x + 10 + 1 + 10x = 0 . We start by combining the like terms:
70x+30x+10x=110x 70x + 30x + 10x = 110x .
Thus, the equation simplifies to 110x+10+1=0 110x + 10 + 1 = 0 .

Step 2: Combine the constant terms:
10+1=11 10 + 1 = 11 .
So, the equation becomes 110x+11=0 110x + 11 = 0 .
Subtract 11 from both sides to isolate the term with x x :
110x=11 110x = -11 .

To solve for x x , divide both sides by 110:
x=11110 x = -\frac{11}{110} .

Simplify the fraction:
x=110 x = -\frac{1}{10} .

Therefore, the solution to the equation is x=110 x = -\frac{1}{10} .

Answer

110 -\frac{1}{10}