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12b/2=63
We move all terms to the left:
12b/2-(63)=0
We multiply all the terms by the denominator
12b-63*2=0
We add all the numbers together, and all the variables
12b-126=0
We move all terms containing b to the left, all other terms to the right
12b=126
b=126/12
b=10+1/2
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