Ответ:

Пошаговое объяснение:

Verified answer

Пошаговое объяснение:

№1553

№1

1) 4. 1/12 - 2. 5/8 = 4. 2/24 - 2. 15/24 = 3. 26/24 - 2. 15/24 = 1. 11/24

2) -7 : 35/24 = -7 * 24/35 = -1 * 24/5 = -24/5 = -4. 4/5

3) -4. 4/5 - 1. 1/10 = -4. 8/10 - 1. 1/10 = -5. 9/10

4) -5. 9/10 * 1. 1/59 = -59/10 * 60/59 = -1/1 * 6/1 = -6/1 = -6

№1553

№1

1) 9,6 : 5/16 = 96/10 * 16/5 = 96/5 * 8/5 = 768/10 = 76,8

2) 4,08 - (-3,2)² = 4,08 - (-3,2 * (-3,2)) = 4,08 - 10,24 = -6,16

3) -6,16 - 76,8 = -82,96

№1554

№1

1) -14,28 * (-5/7) = -1428/100 * (-5/7) = -204/20 * (-1/1) = 204/20 = 10,2

2) 10,2 + (-5,6)² = 10,2 + (-5,6 * (-5,6)) = 10,2 + 31,36 = 41,56

3) 41,56 - 20,76 = 20,8

№1555

№1

1/6х + 6,5 = 0,6(2. 7/9х + 3. 1/3)

1/6х + 65/10 = 6/10(25/9х + 10/3)

1/6х + 65/10 = 150/90х + 60/30

1/6х + 13/2 = 5/3х + 2

1/6х - 5/3х = 2 - 13/2

1/6х - 10/6х = 2 - 6. 1/2

-9/6х = 1. 2/2 - 6. 1/2

-3/2х = 1. 2/2 - 5. 3/2

-3/2х = -4. 1/2

-3/2х = -9/2

х = -9/2 : (-3/2)

х = -9/2 * (-2/3)

х = 18/6

х = 3

№1556

№1

1/8х + 20,25 = 0,8(3. 1/2х + 5. 1/4)

0,125х + 20,25 = 0,8(3,5х + 5,25)

0,125х + 20,25 = 2,8х + 4,2

0,125х - 2,8х = 4,2 - 20,25

-2,675х = -16,05

х = -16,05 : (-2,675)

х = 6