7b=77-4b

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Solution for 7b=77-4b equation: 



7b=77-4b

We move all terms to the left:

7b-(77-4b)=0

We add all the numbers together, and all the variables

7b-(-4b+77)=0

We get rid of parentheses

7b+4b-77=0

We add all the numbers together, and all the variables

11b-77=0

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

11b=77

b=77/11

b=7

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