b-7+3b=28b-7+3b=28

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Solution for b-7+3b=28b-7+3b=28 equation: 



b-7+3b=28b-7+3b=28

We move all terms to the left:

b-7+3b-(28b-7+3b)=0

We add all the numbers together, and all the variables

b+3b-(31b-7)-7=0

We add all the numbers together, and all the variables

4b-(31b-7)-7=0

We get rid of parentheses

4b-31b+7-7=0

We add all the numbers together, and all the variables

-27b=0

b=0/-27

b=0

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