3(7+7k)=105

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Solution for 3(7+7k)=105 equation: 


k in (-oo:+oo)

3*(7*k+7) = 105 // - 105

3*(7*k+7)-105 = 0

3*(7*k+7)-105 = 0

21*k-84 = 0

21*k-84 = 0

21*k-84 = 0 // + 84

21*k = 84 // : 21

k = 84/21

k = 4

k = 4

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