5k-9+2k=61 - solution

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Solution for 5k-9+2k=61 equation:

k in (-oo:+oo)

5*k+2*k-9 = 61 // - 61

5*k+2*k-61-9 = 0

7*k-70 = 0 // + 70

7*k = 70 // : 7

k = 70/7

k = 10

k = 10

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