9b=7b-8

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Solution for 9b=7b-8 equation: 



9b=7b-8

We move all terms to the left:

9b-(7b-8)=0

We get rid of parentheses

9b-7b+8=0

We add all the numbers together, and all the variables

2b+8=0

We move all terms containing b to the left, all other terms to the right

2b=-8

b=-8/2

b=-4

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