Решите пожалуйста дроби)

1) 7/8 + 1 3/8 - 5/8 =  1 10/8 - 5/8 = 1 5/8; 2) 2 1/3 - 2 + 5 1/3 = 5 2/3; 3) 3 6/11 + 5/11 - 2 2/11 = 8 11/11 - 2 2/11 = 6 9/11; 4) 7 1/7 - 1 3/7 - 3 5/7 =  5 4/7 - 3 5/7 = 1 6/7; 5) 4 3/5 + 4/5 + 1 2/5 = 5 2/5  + 1 2/5 = 6 4/5.