- 1 8/8+1 7/8= -1/8
-1+2 1/9= 1 1/9
-3 2/2+ 3 1/2= -1/2
Можно долго:
-4 +3 1/2= -4 +7/2=
-4*2+7. -8+7. -1
--------- =. ------- = - ------
2. 2. 2
-5+4. -1
------- =. -----
7. 7
-5+7. -2. 1
------- = ------- = - ------
8. 8. 4
-1/6+1 = 6/6 - 1/6= 5/6
5/12 -1/12=. 4/12= 1/3
7/15 -11/15= - 4/15
5/16 -1/6= 5*3/16*3 -
1*8/6*8=15/48 - 8/48=
7/48