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x in (-oo:+oo)
x/5-2 = x/15-(2/3) // - x/15-(2/3)
x/5-(x/15)+2/3-2 = 0
2/15*x-4/3 = 0 // + 4/3
2/15*x = 4/3 // : 2/15
x = 4/3/2/15
x = 10
x = 10
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