5n+9+4n=18

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Solution for 5n+9+4n=18 equation: 


n in (-oo:+oo)

5*n+4*n+9 = 18 // - 18

5*n+4*n-18+9 = 0

9*n-9 = 0 // + 9

9*n = 9 // : 9

n = 9/9

n = 1

n = 1

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