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x in (-oo:+oo)
x/26 = 12/13 // - 12/13
x/26-(12/13) = 0
x/26-12/13 = 0
1/26*x-12/13 = 0 // + 12/13
1/26*x = 12/13 // : 1/26
x = 12/13/1/26
x = 24
x = 24
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