r/7=-9/7

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Solution for r/7=-9/7 equation: 


r in (-oo:+oo)

r/7 = -9/7 // + -9/7

r/7-(-9/7) = 0

r/7+9/7 = 0

1/7*r+9/7 = 0 // - 9/7

1/7*r = -9/7 // : 1/7

r = -9/7/1/7

r = -9

r = -9

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