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-2.4b=12.88
We move all terms to the left:
-2.4b-(12.88)=0
We add all the numbers together, and all the variables
-2.4b-12.88=0
We move all terms containing b to the left, all other terms to the right
-2.4b=12.88
b=12.88/-2.4
b=-5+0.88/2.4
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