Respuesta :

8X7= 56
21X10=210
56/210
28/105
4/15

4/15
4 over 15 because when you multiply 8 times 7 and 21 times 10, you get 58 over 210. then you can divide it by 7 to get 8 over 30. Then I divided it by 2 to get 4 over 15.