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

-13/12*n-21 = 0 // + 21

-13/12*n = 21 // : -13/12

n = 21/(-13/12)

n = -252/13

n = -252/13

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