21/j=3

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Solution for 21/j=3 equation: 


D( j )

j = 0

j = 0

j = 0

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

21/j = 3 // - 3

21/j-3 = 0

21*j^-1 = 3 // : 21

j^-1 = 1/7

-1 < 0

1/(j^1) = 1/7 // * j^1

1 = 1/7*j^1 // : 1/7

7 = j^1

j = 7

j = 7

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