13/15m-3/4m+1/12m при 2 1/2

Question

13/15m-3/4m+1/12m при 2 1/2

Answer 1

Ответ:

-8/15

Пошаговое объяснение:

2 1/2= 5/2

13/15m - 3/4m + 1/12m = 13/15*5/2 - 3/4*5/2 + 1/12*5/2 = 13/10 - 15/8 + 5/24 = 156/120 - 225/120 + 25/120 = (156-225+5)/120= -64/120 = -8/15