3b-7=2b+1=5b

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Solution for 3b-7=2b+1=5b equation: 



3b-7=2b+1=5b

We move all terms to the left:

3b-7-(2b+1)=0

We get rid of parentheses

3b-2b-1-7=0

We add all the numbers together, and all the variables

b-8=0

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

b=8

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