3k-9=-15 - solution

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Solution for 3k-9=-15 equation:

k in (-oo:+oo)

3*k-9 = -15 // + 15

3*k-9+15 = 0

3*k+6 = 0 // - 6

3*k = -6 // : 3

k = -6/3

k = -2

k = -2

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