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6.1x+3.9=68.56
We move all terms to the left:
6.1x+3.9-(68.56)=0
We add all the numbers together, and all the variables
6.1x-64.66=0
We move all terms containing x to the left, all other terms to the right
6.1x=64.66
x=64.66/6.1
x=10+1/1.6666666666667
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