43=7-9b

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Solution for 43=7-9b equation: 



43=7-9b

We move all terms to the left:

43-(7-9b)=0

We add all the numbers together, and all the variables

-(-9b+7)+43=0

We get rid of parentheses

9b-7+43=0

We add all the numbers together, and all the variables

9b+36=0

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

9b=-36

b=-36/9

b=-4

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