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4/5-6*x = 124/5 // - 124/5
4/5-6*x-(124/5) = 0
4/5-6*x-124/5 = 0
-6*x-24 = 0 // + 24
-6*x = 24 // : -6
x = 24/(-6)
x = -4
x = -4
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