Помогите дам 24балла

Пошаговое объяснение:

1.

1)

7 19/22 + 15 25/33 = 7 57/66 + 15 50/66 = 22 107/66 = 23  41/66,

2)

75 8/35 - 37 11/14 = 75 16/70 - 37 55/70 = 74 86/70 - 37 55/70 = 37  31/70,

2.

15 9/77 + (12 5/33 - 4 19/21) = 15 9/77 + (12 35/231 - 4 209/231) =

= 15 9/77 + (11 266/231 - 4 209/231) = 15 9/77 + 7 57/231 =

= 15 9/77 + 7 19/77 = 22 28/77 = 22  4/11,

3.

х - 5 13/24 = 7 41/72,

х = 7 41/72 + 5 13/24,

х = 7 41/72 + 5 39/72,

х = 12 80/72,

х = 13 8/72,

х = 13  1/9,

4.

5 7/8 + 1,16 = 5 7/8 + 1 16/100 = 5 175/200 + 1 32/200 =

= 6 207/200 = 7  7/200,

либо:

5 7/8 + 1,16 = 5,875 + 1,16 = 7,035,

5.

1 - 13 4/5 т,

2 - ?, на 7 3/20 т  меньше,

3 - ?,

всего - 35 11/20 т,

1) 13 4/5 - 7 3/20 = 13 16/20 - 7 3/20 = 6  13/20 т - 2 машина,

2) 13 4/5 + 6 13/20 = 13 16/20 + 6 13/20 = 19 29/20 = 20 9/20 т - 1 и 2 маш.,

3) 35 11/20 - 20 9/20 = 15 2/20 = 15  1/10 т - привезли на 3 машине