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100(0.4a-0.25)=100(1.75)
We move all terms to the left:
100(0.4a-0.25)-(100(1.75))=0
We add all the numbers together, and all the variables
100(0.4a-0.25)-175=0
We multiply parentheses
0a-25-175=0
We add all the numbers together, and all the variables
a-200=0
We move all terms containing a to the left, all other terms to the right
a=200
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