7b-5b+b-3=12

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Solution for 7b-5b+b-3=12 equation: 



7b-5b+b-3=12

We move all terms to the left:

7b-5b+b-3-(12)=0

We add all the numbers together, and all the variables

3b-15=0

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

3b=15

b=15/3

b=5

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