Answer:
The mistake he made was not distributing the 1/4 to all the terms in the parentheses. It should've instead become 1/4x + 3, which would then lead to a different answer
He forgot to divide 12 by 4.
Step-by-step explanation:
1/4(x + 12) = 2
1/4(x) + 1/4(12) = 2
x/4 + 12/4 = 2
x/4 + 3 = 2
x/4 = -1
x = -1/4
