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j in (-oo:+oo)
2-(j/5) > 7 // - 7
2-(j/5)-7 > 0
-1/5*j-5 > 0 // + 5
-1/5*j > 5 // : -1/5
j < 5/(-1/5)
j < -25
j in (-oo:-25)
(-oo:-25)
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