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-280=2x-53.6
We move all terms to the left:
-280-(2x-53.6)=0
We get rid of parentheses
-2x+53.6-280=0
We add all the numbers together, and all the variables
-2x-226.4=0
We move all terms containing x to the left, all other terms to the right
-2x=226.4
x=226.4/-2
x=-113+0.40000000000001/2
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