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0.66666667x+7=15
We move all terms to the left:
0.66666667x+7-(15)=0
We add all the numbers together, and all the variables
0.66666667x-8=0
We move all terms containing x to the left, all other terms to the right
0.66666667x=8
x=8/0.66666667
x=11+0.66666663/0.66666667
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