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7.8b-2.14=-42.14
We move all terms to the left:
7.8b-2.14-(-42.14)=0
We add all the numbers together, and all the variables
7.8b+40=0
We move all terms containing b to the left, all other terms to the right
7.8b=-40
b=-40/7.8
b=-5+1/7.8
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