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3 years ago

How do I do -9+-2x+9x-1

Mathematics

2 answers:

Yanka [14]3 years ago

8 0

$-9+(-2x)+9x-1\qquad\text{combine like terms}\\\\=(-2x+9x)+(-9-1)=\boxed{7x-10}$

SVETLANKA909090 [29]3 years ago

3 0

You combine like terms.
-2x+9x
whatever answer that is you then combine the like terms -9+-1 the you just make an expression out of them.

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