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x in (-oo:+oo)
(-9/2)*x-(9/7) = -9/5 // + -9/5
(-9/2)*x-(9/7)-(-9/5) = 0
(-9/2)*x-9/7+9/5 = 0
18/35-9/2*x = 0 // - 18/35
-9/2*x = -18/35 // : -9/2
x = -18/35/(-9/2)
x = 4/35
x = 4/35
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