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x+0.9x=112640
We move all terms to the left:
x+0.9x-(112640)=0
We add all the numbers together, and all the variables
1.9x-112640=0
We move all terms containing x to the left, all other terms to the right
1.9x=112640
x=112640/1.9
x=59284+0.40000000000873/1.9
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