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x in (-oo:+oo)
3/10-x > (3*x)/5-2 // - (3*x)/5-2
3/10-x-((3*x)/5)+2 > 0
(-3/5)*x-x+3/10+2 > 0
23/10-8/5*x > 0 // - 23/10
-8/5*x > -23/10 // : -8/5
x < -23/10/(-8/5)
x < 23/16
x in (-oo:23/16)
(-oo:23/16)
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