13/15m+3/4m-1/12m при m=1 13/23,9/46

Ответы:

13/15m+3/4m-1/12m = 52/60m + 45/60m 5/60m = 92/60m = 23/15m

23/15 * 1 13/23 = 23/15 * 36/23 =  12/5 =  2 ц 2/5

23/15 * 9/46 = 9/30 = 3/10