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x+8.25x=100
We move all terms to the left:
x+8.25x-(100)=0
We add all the numbers together, and all the variables
9.25x-100=0
We move all terms containing x to the left, all other terms to the right
9.25x=100
x=100/9.25
x=10+5/6.1666666666667
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