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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

Verified Answer :

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

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 .