7b+15=5b-3.

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Solution for 7b+15=5b-3. equation: 



7b+15=5b-3.

We move all terms to the left:

7b+15-(5b-3.)=0

We add all the numbers together, and all the variables

7b-(5b-3)+15=0

We get rid of parentheses

7b-5b+3+15=0

We add all the numbers together, and all the variables

2b+18=0

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

2b=-18

b=-18/2

b=-9

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