12b-42=7b+18.b=

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Solution for 12b-42=7b+18.b= equation: 



12b-42=7b+18.b=

We move all terms to the left:

12b-42-(7b+18.b)=0

We add all the numbers together, and all the variables

12b-(+25b)-42=0

We get rid of parentheses

12b-25b-42=0

We add all the numbers together, and all the variables

-13b-42=0

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

-13b=42

b=42/-13

b=-3+3/13

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