2r/7=-4

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Solution for 2r/7=-4 equation: 


r in (-oo:+oo)

(2*r)/7 = -4 // + 4

(2*r)/7+4 = 0

2/7*r+4 = 0 // - 4

2/7*r = -4 // : 2/7

r = -4/2/7

r = -14

r = -14

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