8-2k+k=20 - solution

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Solution for 8-2k+k=20 equation:

k in (-oo:+oo)

k-(2*k)+8 = 20 // - 20

k-(2*k)-20+8 = 0

k-2*k-20+8 = 0

-k-12 = 0 // + 12

-k = 12 // * -1

k = -12

k = -12

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