-7/r-2=3

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Solution for -7/r-2=3 equation: 


D( r )

r = 0

r = 0

r = 0

r in (-oo:0) U (0:+oo)

-7/r-2 = 3 // - 3

-7/r-3-2 = 0

-7*r^-1 = 5 // : -7

r^-1 = -5/7

-1 < 0

1/(r^1) = -5/7 // * r^1

1 = -5/7*r^1 // : -5/7

-7/5 = r^1

r = -7/5

r = -7/5

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