Question

What is the justification for each step in the solution of the equation? 4(4x+6)−7=77−4x Select from the drop-down menus to correctly justify each step.

Answer 1

x=3

Explanation:

4(4x+6)-7=77-4x

open brackets and multiply by 4

16x+24-7=77-4x

16x+17=77-4x

like terms takes on one side and solve for x

16x+4x=77-17

20x=60

x=60/20

x=3