r/7-16=21

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Solution for r/7-16=21 equation: 


r in (-oo:+oo)

r/7-16 = 21 // - 21

r/7-21-16 = 0

1/7*r-37 = 0 // + 37

1/7*r = 37 // : 1/7

r = 37/1/7

r = 259

r = 259

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