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-7.5x+0.21=5.79
We move all terms to the left:
-7.5x+0.21-(5.79)=0
We add all the numbers together, and all the variables
-7.5x-5.58=0
We move all terms containing x to the left, all other terms to the right
-7.5x=5.58
x=5.58/-7.5
x=-3.5316455696203/4.746835443038
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