k/3+21=27

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Solution for k/3+21=27 equation: 


k in (-oo:+oo)

k/3+21 = 27 // - 27

k/3-27+21 = 0

1/3*k-6 = 0 // + 6

1/3*k = 6 // : 1/3

k = 6/1/3

k = 18

k = 18

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