Question

Нужна помощь
А) 3:1 1/2+5:1 1/4
Б) 10 2/3-5 1/3:3 1/5
В) (10 2/3-5 1/3): 3 1/3
Г) 4 1/2×8/9-5 1/3:10 2/3

Answer 1

А)

3:1 1/2+5:1 1/4  =

= 3 : 3/2 + 5 : 5/4 =

= 3 * 2/3 + 5 * 4/5 =

= 2 + 4 = 6,

Б)

10 2/3-5 1/3:3 1/5  =  

= 32/3 - 16/3 : 16/5 =

= 32/3 - 16/3 * 5/16 =

= 32/3 - 5/3 =

= 27/3 =9,

В)

(10 2/3-5 1/3): 3 1/3  =

= (32/3 - 16/3) : 10/3 =

= 16/3 * 3/10 =

= 16/10 = 8/5 = 1 3/5,

Г)

4 1/2×8/9-5 1/3:10 2/3 =

= 9/2 * 8/9 - 16/3 : 32/3 =

= 8/2 - 16/3 * 3/32 =

= 8/2 - 1/2 =

= 7/2 = 3 1/2