x8x-21/15

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Solution for x8x-21/15 equation: 


x in (-oo:+oo)

x < 8*x-(21/15) // - 8*x-(21/15)

x-(8*x)+21/15 < 0

x-8*x+21/15 < 0

7/5-7*x < 0 // - 7/5

-7*x < -7/5 // : -7

x > -7/5/(-7)

x > 1/5

x in (1/5:+oo)

(1/5:+oo)

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