4k+9=-7k+86

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Solution for 4k+9=-7k+86 equation: 


k in (-oo:+oo)

4*k+9 = 86-7*k // - 86-7*k

4*k-(-7*k)-86+9 = 0

4*k+7*k-86+9 = 0

11*k-77 = 0 // + 77

11*k = 77 // : 11

k = 77/11

k = 7

k = 7

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