MelaniaPerham105 MelaniaPerham105

12-08-2015
Mathematics

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Simplify: –3(x – 5) – 8(y + 2) + (–3)(6 – 4b) A. –3x –8y – 12b – 15 B. –3x –8y + 12b + 15 C. –3x –8y + 12b + 20 D. –3x –8y + 12b – 19

Respuesta :

12-08-2015

Expand the expressions:

-3x+15-8y-16-18+12b

Combine like terms:

-3x-8y+12b-19

Now, we have fully simplified this expression. D is the correct answer.

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apologiabiology apologiabiology

13-08-2015

distribute
a(b+c)=ab+ac so
-3(x-5)=-3x+15
-8(y+2)+-8y-16
-3(6-4b)=-18+12b
add them together
-3x+15-8y-16-18+12b
associative property
15-16-18-3x-8y+12b
add
-19-3x-8y+12b is the answer which is D

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