12b-34=2b-4

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Solution for 12b-34=2b-4 equation: 



12b-34=2b-4

We move all terms to the left:

12b-34-(2b-4)=0

We get rid of parentheses

12b-2b+4-34=0

We add all the numbers together, and all the variables

10b-30=0

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

10b=30

b=30/10

b=3

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