Question

VERY EASY QUESTION

Madison made a mistake when she combined terms. Explain what Madison did wrong? Explain and give an example of what she should have done.

What Madison did step by step:
7-3(4-2x)-10x
7-3(2x)-10x
7-6x-10x
7-16x

Answer 1

the mistake is in combining 4 with -2x because they're not like terms
7-3(4-2x)-10x
7-12-6x-10x
-5-16x

Answer 2

Her mistake is that she didn't distribute the terms correctly . She subtracted 4 and- 2x , which is incorrect . She had to multiply -3 and the numbers inside the parenthesis .