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-1.2x-(-4.8)=8.4
We move all terms to the left:
-1.2x-(-4.8)-(8.4)=0
We add all the numbers together, and all the variables
-1.2x-3.6=0
We move all terms containing x to the left, all other terms to the right
-1.2x=3.6
x=3.6/-1.2
x=-3+4.4408920985006E-16/1.2
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