r/-4=-2

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Solution for r/-4=-2 equation: 


r in (-oo:+oo)

r/(-4) = -2 // + 2

r/(-4)+2 = 0

2-1/4*r = 0 // - 2

-1/4*r = -2 // : -1/4

r = -2/(-1/4)

r = 8

r = 8

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