Question

помогите решить срочно дам 30 баллов 1) (6 1/4-4 1/8)×4+3 1/3÷2 1/2=; 2) (2 4/9+1 1/6)×1 4/5-3 1/9÷2 1/3= ;3)(2-1 7/12)÷(3/8-1/6)×3 1/4 =; 4)(7/10-2/5)×(1/4+5/6)÷6 1/2=​

Answer 1

Ответ:

Пошаговое объяснение:

1) (6 1/4-4 1/8)×4+3 1/3÷2 1/2= 9 5/6

1)6 1/4-4 1/8 = 6 2/8 - 4 1/8 = 2 1/8

2) 2 1/8 * 4 = 17/8 * 4 = 17/2 = 8 1/2

3) 3 1/3 : 2 1/2 = 10/3 * 2/5 = 4/3 = 1 1/3

4) 8 1/2 + 1 1/3 = 8 3/6 + 1 2/6 = 9 5/6

2) (2 4/9+1 1/6)×1 4/5-3 1/9÷2 1/3= 5 1/6

1)2 4/9+1 1/6 = 2 8/18 + 1 3/18 = 3 11/18

2) 3 11/18 * 1 4/5 = 65/18 * 9/5= 13/2 = 6 1/2

3)3 1/9 : 2 1/3 = 28/9 *3/7 = 4/3 = 1 1/3

4)6 1/2- 1 1/3 = 6 3/6 - 1 2/6 =5 1/6

3)(2-1 7/12)÷(3/8-1/6)×3 1/4 = 6,5

1)  2 - 1 7/12  = 1 12/12 - 1 7/12 = 5/12

2) 3/8 - 1/6 = 9/24 - 4/24 = 5/24

3)5/12 : 5/24= 5/12 * 24/5 = 2

4)2 * 3 1/4 = 2 * 13/4 = 13/2 = 6,5

4)(7/10-2/5)×(1/4+5/6)÷6 1/2=​ 1/20

1) 7/10 - 2/5 = 7/10 - 4/10 = 3/10

2) 1/4 + 5/6 = 3/12 + 10/12= 13/12 = 1 1/12

3)3/10 * 13/12 = 39/120 = 13/40

4) 13/40 : 6 1/2 = 13/40 : 13/2 = 13/40 * 2/13 = 1/20