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-((37-x)/(-3.1)) = (2*x)/0.5 // - (2*x)/0.5
-((37-x)/(-3.1))-((2*x)/0.5) = 0
0.32258065*(37-x)-4*x = 0
0.32258065*(37-x)-4*x = 0
11.93548405-4.32258065*x = 0
11.93548405-4.32258065*x = 0
11.93548405-4.32258065*x = 0 // - 11.93548405
-4.32258065*x = -11.93548405 // : -4.32258065
x = -11.93548405/(-4.32258065)
x = 2.76119407
x = 2.76119407
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