Question

(3 целых 2\7-4)*(-7\5)-(-8)*3

Answer 1

(3 2/7 - 4) * (-7/5) - (-8)*3 =  25
1) 3 2/7 - 4 = 23/7 - 4 = 23/7 - 28/7 = -5/7
2) -5/7 * (-7/5) = 1
3) -8*3 = -24
4) 1 - (-24) = 1 + 24 = 25

Answer 2

1)3 2/7  -  4 = 23/7  -  4 =(23 * 1  -  4 * 7)/7 = 23/7  -  28/7 =  - 5/7
2)- 5/7  *  (- 7/5) =35/35= 1
3) -8*3= -24
4)1-(-24)=25
ответ 25