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-72+6.2x=-20
We move all terms to the left:
-72+6.2x-(-20)=0
We add all the numbers together, and all the variables
6.2x-52=0
We move all terms containing x to the left, all other terms to the right
6.2x=52
x=52/6.2
x=8+1/2.5833333333333
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