7b-15=5b-3b=

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



7b-15=5b-3b=

We move all terms to the left:

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

We add all the numbers together, and all the variables

7b-(+2b)-15=0

We get rid of parentheses

7b-2b-15=0

We add all the numbers together, and all the variables

5b-15=0

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

5b=15

b=15/5

b=3

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