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Murrr4er [49]
3 years ago
7

How do you solve for b in this expression

Mathematics
1 answer:
Leona [35]3 years ago
7 0
Remember you can do anything to an equation as long as you do it to both sides


8-(3+b)=b-9

remember the distributive property
a(b+c)=ab+ac

distribute that invisible -1
-(3+b)=-1(3+b)=-1(3)-1(b)=-3-b

8-3-b=b-9
add like terms
5-b=b-9
add b to both sides
5=2b-9
add 9 to both sides
14=2b
divide both sides by 2
7=b
b=7
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