7b-3b=64

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Solution for 7b-3b=64 equation: 



7b-3b=64

We move all terms to the left:

7b-3b-(64)=0

We add all the numbers together, and all the variables

4b-64=0

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

4b=64

b=64/4

b=16

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