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5b+8-4.5b=-26.5
We move all terms to the left:
5b+8-4.5b-(-26.5)=0
We add all the numbers together, and all the variables
0.5b+34.5=0
We move all terms containing b to the left, all other terms to the right
0.5b=-34.5
b=-34.5/0.5
b=-69
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