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x in (-oo:+oo)
x/6 = 8/13 // - 8/13
x/6-(8/13) = 0
x/6-8/13 = 0
1/6*x-8/13 = 0 // + 8/13
1/6*x = 8/13 // : 1/6
x = 8/13/1/6
x = 48/13
x = 48/13
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