n/2-3n/4+5n/6=21

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Solution for n/2-3n/4+5n/6=21 equation: 


n in (-oo:+oo)

n/2-((3*n)/4)+(5*n)/6 = 21 // - 21

n/2-((3*n)/4)+(5*n)/6-21 = 0

n/2+(-3/4)*n+(5*n)/6-21 = 0

7/12*n-21 = 0 // + 21

7/12*n = 21 // : 7/12

n = 21/7/12

n = 36

n = 36

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