1) 4 1/2:2 1/4; 2) 2 4/3:1 2/5; 3) 7/9:2 1/3; 4) - вопрос №153300491412214224312537921348121920 от I3eTePo4eK265 04.03.2020 16:59

Question

Математика: 1) 4 1/2:2 1/4; 2) 2 4/3:1 2/5; 3) 7/9:2 1/3; 4) 8 1/2:19/20(На фото)​

I3eTePo4eK265 · Answer

1) 4 1/2 : 2 1/4 = 9/2 : 9/4 = 9/2 · 4/9 = 4/2 = 2

2) 2 4/5 : 1 2/5 = 14/5 : 7/5 = 14/5 · 5/7 = 14/7 = 2

3) 7/9 : 2 1/3 = 7/9 : 7/3 = 7/9 · 3/7 = 3/9 = 1/3

4) 8 1/2 : 19/20 = 17/2 · 20/19 = (17·10)/(1·19) = 170/19 = 8 целых 18/19

1) 4 1/2:2 1/4; 2) 2 4/3:1 2/5; 3) 7/9:2 1/3; 4) 8 1/2:19/20(На фото)​