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-3+b/15=-2
We move all terms to the left:
-3+b/15-(-2)=0
We add all the numbers together, and all the variables
b/15-1=0
We multiply all the terms by the denominator
b-1*15=0
We add all the numbers together, and all the variables
b-15=0
We move all terms containing b to the left, all other terms to the right
b=15
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