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(4*x)/3-x = x/15-(12/5) // - x/15-(12/5)
(4*x)/3-x-(x/15)+12/5 = 0
4/15*x+12/5 = 0 // - 12/5
4/15*x = -12/5 // : 4/15
x = -12/5/4/15
x = -9
x = -9
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