7b+4=3b+12

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Solution for 7b+4=3b+12 equation: 



7b+4=3b+12

We move all terms to the left:

7b+4-(3b+12)=0

We get rid of parentheses

7b-3b-12+4=0

We add all the numbers together, and all the variables

4b-8=0

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

4b=8

b=8/4

b=2

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