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x in (-oo:+oo)
x/15 = 24/9 // - 24/9
x/15-(24/9) = 0
x/15-8/3 = 0
1/15*x-8/3 = 0 // + 8/3
1/15*x = 8/3 // : 1/15
x = 8/3/1/15
x = 40
x = 40
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