r/7=-7

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Solution for r/7=-7 equation: 


r in (-oo:+oo)

r/7 = -7 // + 7

r/7+7 = 0

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

1/7*r = -7 // : 1/7

r = -7/1/7

r = -49

r = -49

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