1)2 1/2*2/3+3/4*2/3-2*2/3; 2)5 3/4*5/22+1/2*5/22+4 3/4*5/22; 3)3/13*2/7+3/13*6/7-6/13*1/7

Question

1)2 1/2*2/3+3/4*2/3-2*2/3; 2)5 3/4*5/22+1/2*5/22+4 3/4*5/22; 3)3/13*2/7+3/13*6/7-6/13*1/7

Answer 1

1. 5/6
2. 2 1/2
3. 18/91