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3 years ago

4. Simplify the expression. -3(b – 7)

Mathematics

2 answers:

astraxan [27]3 years ago

6 0

i believe the answer is -3b+21

djyliett [7]3 years ago

4 0

-3(b-7)
-3b+21=0
-3b=-21(minus will cancel minus)
b=21/3
b=7

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Replace x by the value as below

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