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11/4-(x/5) = 2*x // - 2*x
11/4-(x/5)-(2*x) = 0
11/4-(x/5)-2*x = 0
11/4-11/5*x = 0 // - 11/4
-11/5*x = -11/4 // : -11/5
x = -11/4/(-11/5)
x = 5/4
x = 5/4
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