Question

What is the value of x in the equation 4x - 10 = 18

Answer 1

4x - 10 = 18| + 10

4x - 10 + 10 = 18 + 10

4x = 28| ÷ 4

4x ÷ 4 = 28 ÷ 4

x = 7

Answer 2

Start with

`4x - 10 = 18`

Add 10 to both sides:

`4x - 10+10 = 18+10`

This cancels the "-10" on the left hand side:

`4x = 28`

Divide both sides by 4:

`(4x)/(4) = (28)/(4)`

This cancels the 4 on the left hand side:

`x = 7`