7/r-2-1/2=8

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Solution for 7/r-2-1/2=8 equation: 


D( r )

r = 0

r = 0

r = 0

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

7/r-(1/2)-2 = 8 // - 8

7/r-(1/2)-8-2 = 0

7/r-1/2-8-2 = 0

7*r^-1 = 21/2 // : 7

r^-1 = 3/2

-1 < 0

1/(r^1) = 3/2 // * r^1

1 = 3/2*r^1 // : 3/2

2/3 = r^1

r = 2/3

r = 2/3

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