Question

Solve, showing and explaining all steps in the process. 7x - 9 - 4(x - 1) = 28​

Answer 1

x = 13

Explanation:

7x - 9 - 4(x - 1) = 28

Distribute the 4

7x - 9 - 4x - 4 = 28

Add like terms

(7x - 4x) + (-9 - 4) = 28

3x + (-13) = 26

add 13 to each side to isolate the x

3x = 39

Divide both sides by 3 to finish isolating the x

x = 13