3/7-k/3=8/21

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Solution for 3/7-k/3=8/21 equation: 


k in (-oo:+oo)

3/7-(k/3) = 8/21 // - 8/21

3/7-(k/3)-(8/21) = 0

3/7-(k/3)-8/21 = 0

1/21-1/3*k = 0 // - 1/21

-1/3*k = -1/21 // : -1/3

k = -1/21/(-1/3)

k = 1/7

k = 1/7

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