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15-0.08x=12.76
We move all terms to the left:
15-0.08x-(12.76)=0
We add all the numbers together, and all the variables
-0.08x+2.24=0
We move all terms containing x to the left, all other terms to the right
-0.08x=-2.24
x=-2.24/-0.08
x=+28
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