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0.1x=7.8
We move all terms to the left:
0.1x-(7.8)=0
We add all the numbers together, and all the variables
0.1x-7.8=0
We move all terms containing x to the left, all other terms to the right
0.1x=7.8
x=7.8/0.1
x=78+-8.881784197E-16/0.1
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