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7.9x+15.82=31.64
We move all terms to the left:
7.9x+15.82-(31.64)=0
We add all the numbers together, and all the variables
7.9x-15.82=0
We move all terms containing x to the left, all other terms to the right
7.9x=15.82
x=15.82/7.9
x=2+0.02/7.9
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