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x in (-oo:+oo)
1/3 = (-7/2)*x-(3/5) // - (-7/2)*x-(3/5)
1/3-((-7/2)*x)+3/5 = 0
(7/2)*x+1/3+3/5 = 0
7/2*x+14/15 = 0 // - 14/15
7/2*x = -14/15 // : 7/2
x = -14/15/7/2
x = -4/15
x = -4/15
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