7b=8+9b

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Solution for 7b=8+9b equation: 



7b=8+9b

We move all terms to the left:

7b-(8+9b)=0

We add all the numbers together, and all the variables

7b-(9b+8)=0

We get rid of parentheses

7b-9b-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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