r/4-213

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Solution for r/4-213 equation: 


r in (-oo:+oo)

r/4-2 > 13 // - 13

r/4-13-2 > 0

1/4*r-15 > 0 // + 15

1/4*r > 15 // : 1/4

r > 15/1/4

r > 60

r in (60:+oo)

(60:+oo)

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