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x in (-oo:+oo)
(3*x)/13+5/13 = (2*x)/13-(4/13) // - (2*x)/13-(4/13)
(3*x)/13-((2*x)/13)+5/13+4/13 = 0
(3*x)/13+(-2/13)*x+5/13+4/13 = 0
1/13*x+9/13 = 0 // - 9/13
1/13*x = -9/13 // : 1/13
x = -9/13/1/13
x = -9
x = -9
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