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Simplify the expression.
-9(a + b) - 3a

User Bohdan
by
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1 Answer

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ANSWER: -12a - 9b

Step-by-step explanation:

The problem is -9(a+b)-3a

First you have to distribute -9 to a and b which will give you -9a - 9b - 3a

Because the term -9a and -3a share the same variable you combine like terms.
-9 - 3 = -12

You will then have -12a - 9b
User Mrdrbob
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