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x+.12x=10500
We move all terms to the left:
x+.12x-(10500)=0
We add all the numbers together, and all the variables
1.12x-10500=0
We move all terms containing x to the left, all other terms to the right
1.12x=10500
x=10500/1.12
x=9375+-1.8189894035459E-12/1.12
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