Answer:
(c) he subtracted by 6x instead of adding 6x on both sides
Explanation:
You want to know the mistake in the solution of the equation ...
-2(3x -5) = 4(x +3) +8
Solution
The solution should proceed like this:
-2(3x -5) = 4(x +3) +8
-6x +10 = 4x +12 +8 . . . . . . . use the distributive property
-6x +10 = 4x +20 . . . . . . . . . . combine like terms
10 = 10x +20 . . . . . . . . . . . . . . . add 6x (Andre did this wrong)
-10 = 10x . . . . . . . . . . . subtract 20
-1 = x . . . . . . . . . . . divide by 10
The choice that best describes Andre's error is ...
he subtracted by 6x instead of adding 6x on both sides