Question

2 7/9+4 2/3; 4 2/15-1 5/21; 5 3/8+1 2/7; 3 11/45-2 13/30; 3 7/12+7 9/20; 7 9/24-3 19/36

Answer 1

$2 \times \frac{7}{9} + 4 \times \frac{2}{3} = \frac{14}{9} + \frac{8}{3} = \frac{38}{9}$