3x2 - x - 24

To solve a two-step equation you want to isolate the variable in the equation. In this case it is X.

first: 3X-24=0

+24 +24 add 24 to both sides

second: 3X=24

3X=24 divide by three on both sides

3 3

solution: X=8

you can check your work by plugging in the X value so...

3x8-24=0

24-24=0

0=0 when both sides of the equation equal each other the X value is correct.