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-7b-2=12*
We move all terms to the left:
-7b-2-(12*)=0
We add all the numbers together, and all the variables
-7b-2-0=0
We add all the numbers together, and all the variables
-7b-2=0
We move all terms containing b to the left, all other terms to the right
-7b=2
b=2/-7
b=-2/7
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