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38b=4(4-1)-84
We move all terms to the left:
38b-(4(4-1)-84)=0
We add all the numbers together, and all the variables
38b-(43-84)=0
We add all the numbers together, and all the variables
38b+41=0
We move all terms containing b to the left, all other terms to the right
38b=-41
b=-41/38
b=-1+3/38
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