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x in (-oo:+oo)
(4*x)/(-7) > 10 // - 10
(4*x)/(-7)-10 > 0
-4/7*x-10 > 0 // + 10
-4/7*x > 10 // : -4/7
x < 10/(-4/7)
x < -35/2
x in (-oo:-35/2)
(-oo:-35/2)
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