-44 4/7= -312/7
-1 31/35= -66/35
-3 5/33= - 104/33
-20 3/13= -263/13
-17 8/13= - 229/13
1) -312/7*(-35/66)= 52*5/11= 260/11
2) 260/11*(-33/104)= -5*3/2= -15/2
3) -263/13-229/13= -492/13
4) -15/2-492/13= -15*13/26- 492*2/26= -195/26- 984/26= -1179/26= -45 9/26