Solve the Rational Equation: (5+3(x-2))/(5+x) = 3/4

Question

Solve for X:

5+3×(x2)5+x=34 \frac{5+3\times(x-2)}{5+x}=\frac{3}{4}

Video Solution

Solution Steps

00:00 Find X
00:04 Multiply by the common denominator to eliminate fractions
00:19 Make sure to open parentheses properly, multiply by each factor
00:49 Combine like terms
00:59 Arrange the equation so that X is isolated on one side
01:10 Combine like terms
01:14 Isolate X
01:17 And this is the solution to the problem

Step-by-Step Solution

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

  • Step 1: Cross-multiply to eliminate the fractions.
  • Step 2: Simplify the resulting linear equation.
  • Step 3: Solve for x x .

Now, let's work through each step:

Step 1: Starting with the equation:

5+3×(x2)5+x=34\frac{5 + 3 \times (x - 2)}{5 + x} = \frac{3}{4}

Cross-multiply to remove the fractions:

4(5+3×(x2))=3(5+x)4 \cdot (5 + 3 \times (x - 2)) = 3 \cdot (5 + x)

Step 2: Simplify the equation. Expand inside the brackets:

4(5+3x6)=3(5+x)4 \cdot (5 + 3x - 6) = 3 \cdot (5 + x)

Simplify further:

4(3x1)=3(5+x)4 \cdot (3x - 1) = 3 \cdot (5 + x)

Distribute the constants:

12x4=15+3x12x - 4 = 15 + 3x

Step 3: Solve for x x .

Subtract 3x 3x from both sides:

12x3x4=1512x - 3x - 4 = 15

9x4=159x - 4 = 15

Add 4 to both sides:

9x=199x = 19

Divide both sides by 9:

x=199x = \frac{19}{9}

Therefore, the solution to the problem is x=199 x = \frac{19}{9} .

Answer

199 \frac{19}{9}