Question

помогите пжж срочно это кр дам 30 балов

Answer 1

(2,25 + 3 2/3) : (8 1/2 - 1 2/5) * 1,2 =  1

1)  2,25 + 3 2/3 = 2 1/4 + 3 2/3 = 2 3/12 + 3 8/12 = 5 11/12,

2)  8 1/2 - 1 2/5 = 8 5/10 - 1 4/10 = 7 1/10,

3)  5 11/12 : 7 1/10 = 71/12 : 71/10 = 71/12 * 10/71 = 10/12 = 5/6,

4)  5/6 * 1,2 = 5/6 * 12/10 = 2/2 = 1