(-1,25 - 1 1/3) * (-5 1/7)- 1 1/6 : 5 4/9

1) -1ц25/100 - 1ц1/3= -1ц1/4-1ц1/3=-1ц3/12-1ц4/12= - 2ц7/12
2) -2ц7/12*(-5ц1/7)=-31/12*(-36/7)=93/7=13ц2/7
3)1ц1/6:5ц4/9=7/6:49/9=7/6*9/49=3/14
4)13ц2/7-3/14=13ц4/14-3/14=13ц1/14

- 1,25 - 1 1/3 = -1 25/100 - 1, 1/3 = -1 1/4 - 1 1/3 = -31/12
-31/12 * (-5 1/7)= -31/12 * 36/7 = 93/7 
1 1/6 : 5 4/9 = 3/14
93/7 - 3/14 = 183/14 = 13 1/14