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2.2-2.86x=-17.82
We move all terms to the left:
2.2-2.86x-(-17.82)=0
We add all the numbers together, and all the variables
-2.86x+20.02=0
We move all terms containing x to the left, all other terms to the right
-2.86x=-20.02
x=-20.02/-2.86
x=+7
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