Question

Вычислите 15/17*7/9-5/9:17/13

Answer 1

15/17×7/9-5/9:17/13=10/39

1) 15/17×7/9=105/156
2) 5/9:17/13=5/9×13/17=65/156
3) 105/156-65/156=40/156=10/39