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x-0.15x=242.25
We move all terms to the left:
x-0.15x-(242.25)=0
We add all the numbers together, and all the variables
0.85x-242.25=0
We move all terms containing x to the left, all other terms to the right
0.85x=242.25
x=242.25/0.85
x=285
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