Question

This equation has one solution. 5(x – 1) + 3x = 7(x + 1) What is the solution?

Answer 1

x = 12

Explanation:

Distribute the parenthesis on both sides of the equation

5x - 5 + 3x = 7x + 7

8x - 5 = 7x + 7 ( subtract 7x from both sides )

x - 5 = 7 ( add 5 to both sides )

x = 12

Answer 2

Open up the brackets

`5x - 5 + 3x = 7x + 7`
Collect like terms

`5x + 3x - 7x = 7 + 5`
Simplify

`8x -7x = 12`

`x = 12`
Therefore, your answer is 12.