Question

помогите дам 25баллов​

Answer 1

Ответ:

) 8,1 * 1 9/36 = 81/10 * 45/36 = 9/2 * 9/4 = 81/8 = 10 1/8

2) -1,4 : 4 = -14/10 * 1/4 = -7/10 * 1/2 = -7/20

3) 10 1/8 + (-7/20) = 10 1/8 - 7/20 = 10 5/40 - 14/40 = 9 45/40 -'14/40 = 9 29/40