daurenovna13 А) -5/6+(-1/2)= -5/6-1/2= -5/6`¹-1/2`³= -5/6-3/6= -8/6= -4/3= -1 1/3
Б) -3/4+(-3/10)= -3/4-3/10= -15/20-6/20= -21/20= -1 1/20= -1,05
В) -3/5+3/5=0
Г) -4/9+8/15= -20/45+24/45= 4/45
Д) 3 1/4+(-8 2/3)= 3 1/4-8 2/3= 3 3/12-8 8/12= 39/12-104/12= -65/12= -5 5/12
Е) -12 3/8+(-4 11/12)= -12 3/8-4 11/12= -12 9/24-4 22/24= -297/24-118/24= -415/24= -17 7/24
Ж) -2 5/9+(-2 5/8)= -2 5/9-2 5/8= -2 40/72-2 45/72= -184/72-189/72= -373/72= -350 23/72
З) -6 7/12+7 4/9= -6 21/36+7 16/36= -237/36+268/36= 31/36