7k+7=28

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Solution for 7k+7=28 equation: 


k in (-oo:+oo)

7*k+7 = 28 // - 28

7*k-28+7 = 0

7*k-21 = 0 // + 21

7*k = 21 // : 7

k = 21/7

k = 3

k = 3

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