42=9b-7

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Solution for 42=9b-7 equation: 



42=9b-7

We move all terms to the left:

42-(9b-7)=0

We get rid of parentheses

-9b+7+42=0

We add all the numbers together, and all the variables

-9b+49=0

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

-9b=-49

b=-49/-9

b=5+4/9

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