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x in (-oo:+oo)
2.8/1.32 = x/38.75 // - x/38.75
2.8/1.32-(x/38.75) = 0
2.8/1.32-0.02580645*x = 0
2.12121212-0.02580645*x = 0 // - 2.12121212
-0.02580645*x = -2.12121212 // : -0.02580645
x = -2.12121212/(-0.02580645)
x = 82.19697479
x = 82.19697479
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