Объяснение:
(-6/12+11/16):(-13/72) = -1 1/26
1) -6/12 + 11/16 = -24/48 + 33/48 = 9/48
2) 9/48 : (-13/72) = 9/48 *(-72/13) = -54/52 = -1 2/52 = -1 1/26
-6/12+11/16=(-30/48+33/48)=(-63/48):(-13/72)=756/104=7_28/104=7_12/26=7_6/13
