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laila [671]
3 years ago
7

What is 9 - 4 ( -a + 9) + 3 (7 - 2a)

Mathematics
2 answers:
Natali5045456 [20]3 years ago
8 0
Hey there!

In order to solve this expression, we can use the distributive property. The distributive property states:

a(b+c) = ab+ac

Using this property along with addition and subtraction, we can simplify:

9-4(-a+9) + 3(7-2a) =

9 + 4a - 36 + 21 - 6a

Combine like terms:

(9-36+21) + (4a-6a) =

-6 - 2a 

Hope this helps
Elena L [17]3 years ago
3 0
-2a - 6

Hope I helped!

~ Zoe
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