-6+2k=7k-21 - solution

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Solution for -6+2k=7k-21 equation:

k in (-oo:+oo)

2*k-6 = 7*k-21 // - 7*k-21

2*k-(7*k)-6+21 = 0

2*k-7*k-6+21 = 0

15-5*k = 0 // - 15

-5*k = -15 // : -5

k = -15/(-5)

k = 3

k = 3

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