7=-k+2k-1 - solution

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Solution for 7=-k+2k-1 equation:

k in (-oo:+oo)

7 = 2*k-k-1 // - 2*k-k-1

k-(2*k)+1+7 = 0

k-2*k+1+7 = 0

8-k = 0 // - 8

-k = -8 // * -1

k = 8

k = 8

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