Question

Gwendolyn is asked to solve the equation -4(x-3) = 20. She shows the work below and states that the solution is x=-8

- 4(x-3) = 20
- 4x + 12 = 20
-4x=32
x=-8

Unfortunately, Gwendolyn's work is flawed. Explain the flaw in Gwendolyn's work.

Determine the correct solution to the equation​

Answer 1

x = -2

Explanation:

-4(x-3) = 20

-4x + 12 = 20

^ Here, Glendon added 12 to 20 instead of subtracting. Her equation was not balanced.

-4x = 8

x = -2