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x in (-oo:+oo)
(4/5)*x-2 > (3/5)*x // - (3/5)*x
(4/5)*x-((3/5)*x)-2 > 0
(4/5)*x+(-3/5)*x-2 > 0
1/5*x-2 > 0 // + 2
1/5*x > 2 // : 1/5
x > 2/1/5
x > 10
x in (10:+oo)
(10:+oo)
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