1/2+1/4= 2/3+1/6= 3/5+1/8= 3/7 - 1/3= 5/6-1/3= решить! / знак дроби.

1/2 + 1/4 = 2/4 + 1/4 = 3/4
2/3 + 1/6 = 4/6 + 1/6 = 5/6
3/5 + 1/8 = 24/40 + 5/40 = 29/40
3/7 - 1/3 = 9/21 - 7/21 = 2/21
5/6 - 1/3 = 5/6 - 2/6 = 3/6 = 1/2

/ этот знак типо одна вторая?