7/9=r/2

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Solution for 7/9=r/2 equation: 


r in (-oo:+oo)

7/9 = r/2 // - r/2

7/9-(r/2) = 0

7/9-1/2*r = 0 // - 7/9

-1/2*r = -7/9 // : -1/2

r = -7/9/(-1/2)

r = 14/9

r = 14/9

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