2r-31/421/2

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Solution for 2r-31/421/2 equation:


r in (-oo:+oo)

2*r-(31/4) < 21/2 // - 21/2

2*r-(31/4)-(21/2) < 0

2*r-31/4-21/2 < 0

2*r-73/4 < 0 // + 73/4

2*r < 73/4 // : 2

r < 73/4/2

r < 73/8

r in (-oo:73/8)

(-oo:73/8)

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