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0.843940x+0.8329439=12
We move all terms to the left:
0.843940x+0.8329439-(12)=0
We add all the numbers together, and all the variables
0.843940x-11.1670561=0
We move all terms containing x to the left, all other terms to the right
0.843940x=11.1670561
x=11.1670561/0.843940
x=13+0.1958361/0.843940
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