-r/7=-7

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Solution for -r/7=-7 equation: 


r in (-oo:+oo)

-r/7 = -7 // + 7

7-r/7 = 0

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

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

r = -7/(-1/7)

r = 49

r = 49

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