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b/2+-3.5=-1.64
We move all terms to the left:
b/2+-3.5-(-1.64)=0
We add all the numbers together, and all the variables
b/2-1.86=0
We multiply all the terms by the denominator
b-(1.86)*2=0
We add all the numbers together, and all the variables
b-3.72=0
We move all terms containing b to the left, all other terms to the right
b=3.72
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