Question

What is the solution set of the equation below? x +4 = 3x -12

Answer 1

x = { 8 }

Explanation:

x + 4 = 3x - 12 ( subtract x from both sides )

x - x + 4 = 3x - x - 12 ( simplify )

4 = 2x - 12 ( add 12 to both sides )

4 + 12 = 2x - 12 + 12 ( simplify )

16 = 2x ( divide both sides by 2 )

`(16)/(2)` =
`(2)/(2)` x , that is

8 = x