10b+12=7b-15

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Solution for 10b+12=7b-15 equation: 



10b+12=7b-15

We move all terms to the left:

10b+12-(7b-15)=0

We get rid of parentheses

10b-7b+15+12=0

We add all the numbers together, and all the variables

3b+27=0

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

3b=-27

b=-27/3

b=-9

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