Solve for X in 3(x+2)=5(2-x): Linear Equation with Distributive Property

Question

Solve for X:


3(x+2)=5(2x) 3(x+2)=5(2-x)

Video Solution

Solution Steps

00:00 Find X
00:03 Make sure to open brackets properly, multiply by each factor
00:21 Solve each multiplication separately
00:25 Positive times negative is always negative
00:29 Arrange the equation so that X is isolated on one side
00:46 Collect like terms
00:56 Isolate X
01:09 Simplify as much as possible
01:12 Break down 8 into factors 4 and 2
01:15 Simplify as much as possible
01:18 And this is the solution to the question

Step-by-Step Solution

To solve the given equation 3(x+2)=5(2x)3(x+2) = 5(2-x), we will follow these steps:

  • Step 1: Distribute on both sides of the equation.

For the left side, distribute 33 over (x+2)(x+2):

3(x+2)=3x+63(x+2) = 3x + 6

For the right side, distribute 55 over (2x)(2-x):

5(2x)=105x5(2-x) = 10 - 5x

  • Step 2: Rewrite the equation with the expanded terms.

The equation becomes:

3x+6=105x3x + 6 = 10 - 5x

  • Step 3: Combine like terms to isolate xx.

First, add 5x5x to both sides to get all xx terms on the left side:

3x+5x+6=103x + 5x + 6 = 10

This simplifies to:

8x+6=108x + 6 = 10

Next, subtract 6 from both sides to isolate the term with xx:

8x=48x = 4

  • Step 4: Solve for xx.

Divide both sides by 8 to solve for xx:

x=48x = \frac{4}{8}

Simplify the fraction:

x=12x = \frac{1}{2}

Therefore, the solution to the equation is x=12x = \frac{1}{2}.

Answer

x=12 x=\frac{1}{2}