7/r=16/2

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Solution for 7/r=16/2 equation: 


D( r )

r = 0

r = 0

r = 0

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

7/r = 16/2 // - 16/2

7/r-(16/2) = 0

7/r-8 = 0

7*r^-1 = 8 // : 7

r^-1 = 8/7

-1 < 0

1/(r^1) = 8/7 // * r^1

1 = 8/7*r^1 // : 8/7

7/8 = r^1

r = 7/8

r = 7/8

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