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-7+b/9=-1
We move all terms to the left:
-7+b/9-(-1)=0
We add all the numbers together, and all the variables
b/9-6=0
We multiply all the terms by the denominator
b-6*9=0
We add all the numbers together, and all the variables
b-54=0
We move all terms containing b to the left, all other terms to the right
b=54
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