7k+1=78

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Solution for 7k+1=78 equation: 


k in (-oo:+oo)

7*k+1 = 78 // - 78

7*k-78+1 = 0

7*k-77 = 0 // + 77

7*k = 77 // : 7

k = 77/7

k = 11

k = 11

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