5+2k=21

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Solution for 5+2k=21 equation: 


k in (-oo:+oo)

2*k+5 = 21 // - 21

2*k-21+5 = 0

2*k-16 = 0 // + 16

2*k = 16 // : 2

k = 16/2

k = 8

k = 8

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