7b+13=25+3b

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Solution for 7b+13=25+3b equation: 



7b+13=25+3b

We move all terms to the left:

7b+13-(25+3b)=0

We add all the numbers together, and all the variables

7b-(3b+25)+13=0

We get rid of parentheses

7b-3b-25+13=0

We add all the numbers together, and all the variables

4b-12=0

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

4b=12

b=12/4

b=3

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