Explain the Error Find the error in the solution, and then solve it correctly.
9x + 12 + 6x = 1
9x + 12 = -5
9x = -17
-17
9
(select) was subtracted from the left side, but (select) was subtracted from the right
side. The Subtraction Property of Equality states that you can subtract the same number
from each side and the equation will remain true. But 6x and 6 are not the same number
(unless x is (select))
X =