Question

1)1/3-(+2/3); 2) -2/5-(-3/5); 3)-2/5-(-3/5); 4)-3/7-(+4/7); 5)5/8-(-7/8); 6)-1/9-(+2/9)

Answer 1

1) 1/3 - (+2/3) = 1/3 - 2/3 = - 1/3
2) - 2/5 - (-3/5) = - 2/5 + 3/5 = 3/5 - 2/5 = 1/5
3) 2/5 - (-3/5) = 2/5 + 3/5 = 5/5 = 1
4) - 3/7 - (+4/7) = - 3/7 - 4/7 = - 7/7 = - 1
5) 5/8 - (-7/8) = 5/8 + 7/8 = 12/8 = 1 целая 4/8 = 1 целая 1/2
6) - 1/9 - (+2/9) = - 1/9 - 2/9 = - 3/9 = - 1/3