Question

1)
$\frac{7}{12} + \frac{5}{9} + \frac{4}{3} =$


2)
$4 \frac{2}{11} - 6 \frac{9}{22} + 1 \frac{1}{2}$
3)
$- 2 \frac{2}{9} \times \frac{27}{6} =$
4)
$( - 12 \frac{2}{5} ) \div - 3 \frac{1}{10} \div 4 =$
​

Answer 1

Пошаговое объяснение:

1) 7/12 + 5/9 + 4/3 = (21+20+48)/36 = 89/36 = 2 17/36

2) 4 2/11 - 6 9/22 + 1 1/2 = 4 4/22 - 6 9/22 + 1 11/22 = -1 6/22 = -1 3/11

3) -2 2/9 * 27/6 = -20/9 * 27/6 = -10

4) (-12 2/5) : (-3 1/10) : 4 = 4:4 = 1

Answer 2

Пошаговое объяснение:

№1

7/12 + 5/9 + 4/3 = 21/36 + 20/36 + 48/36 =

(21 + 20 + 48)/36 = 89/36 = 2 17/36

№2

4 2/11 - 6 9/22 + 1 1/2 = 4 4/22 - 6 9/22 + 1 11/22 =

-2 5/22 + 1 11/22 = -1 27/22 + 1 11/22 = -16/22 = -8/11

№3

-2 2/9 * 27/6 = -20/9 * 27/6 = -10/1 * 3/3 =

-10 * 1 = -10

№4

-12 2/5 : (-3 1/10) : 4 = -62/5 : (-31/10) : 4 =

-62/5 * (-10/31) * 1/4 = 620/155 * 1/4 = 155/155 * 1/1 =

155/155 = 1