-2/7r=-8

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Solution for -2/7r=-8 equation: 


r in (-oo:+oo)

(-2/7)*r = -8 // + 8

(-2/7)*r+8 = 0

8-2/7*r = 0 // - 8

-2/7*r = -8 // : -2/7

r = -8/(-2/7)

r = 28

r = 28

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