4k+9=13

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Solution for 4k+9=13 equation: 


k in (-oo:+oo)

4*k+9 = 13 // - 13

4*k-13+9 = 0

4*k-4 = 0 // + 4

4*k = 4 // : 4

k = 4/4

k = 1

k = 1

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