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7+0.07x=16.66
We move all terms to the left:
7+0.07x-(16.66)=0
We add all the numbers together, and all the variables
0.07x-9.66=0
We move all terms containing x to the left, all other terms to the right
0.07x=9.66
x=9.66/0.07
x=138
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