3+k+2k=9 - solution

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Solution for 3+k+2k=9 equation:

k in (-oo:+oo)

k+2*k+3 = 9 // - 9

k+2*k-9+3 = 0

3*k-6 = 0 // + 6

3*k = 6 // : 3

k = 6/3

k = 2

k = 2

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