3k+7-k=-1 - solution

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Solution for 3k+7-k=-1 equation:

k in (-oo:+oo)

3*k-k+7 = -1 // + 1

3*k-k+1+7 = 0

2*k+8 = 0 // - 8

2*k = -8 // : 2

k = -8/2

k = -4

k = -4

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