7r=-3/7

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Solution for 7r=-3/7 equation: 


r in (-oo:+oo)

7*r = -3/7 // + -3/7

7*r-(-3/7) = 0

7*r+3/7 = 0

7*r+3/7 = 0 // - 3/7

7*r = -3/7 // : 7

r = -3/7/7

r = -3/49

r = -3/49

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