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3.5-0.02x=0.78
We move all terms to the left:
3.5-0.02x-(0.78)=0
We add all the numbers together, and all the variables
-0.02x+2.72=0
We move all terms containing x to the left, all other terms to the right
-0.02x=-2.72
x=-2.72/-0.02
x=+136
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