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x in (-oo:+oo)
x/45 = 17/51 // - 17/51
x/45-(17/51) = 0
x/45-1/3 = 0
1/45*x-1/3 = 0 // + 1/3
1/45*x = 1/3 // : 1/45
x = 1/3/1/45
x = 15
x = 15
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