Question

Извиняюсь за качество, решить б, в даю 100 баллов

Answer 1

Пошаговое объяснение:

б)

1) -6 2/3-2 4/15-5 1/2= -6 20/30-2 8/30-5 15/30=

= -13 43/30= -14 13/30

2) -14 13/30:1/15= -433/30•15/1= -433/2

3) 30:5/28=30/1•28/5=168

4) -433/2+168= (-433+336)/2= -97/2= - 48,5

5) 2 3/4•3 19/22:42 1/2=

=11/4•85/22:85/2=11/4•85/22•2/85=1/4=0,25

6) -48,5:0,25= -194

в)

1) 33/54-11/16=528/864-594/864=

= -66/864= -11/144

2) 7/12-14/15=35/60-56/60= -21/60=

= -7/20

3) -11/144•(-7/20)=77/2880

4) -77/2880•2 2/7•8/9=

= -77/2880•16/7•8/9= -22/405

5) 18:4 13/27=18/1:121/27=18/1•27/121=

=486/121

6) -22/405•486/121= -12/55

7) 13/20+11/35=91/140+44/140=

=135/140=27/28

8) 7/22-23/33=21/66-46/66= -25/66

9) 27/28•(-25/66)= -225/616

10) -4:1 1/4•1 2/9:5/7•(-225/616)=

=4/1•4/5•11/9•7/5•225/616=2

11) -12/55:2= -12/55•1/2= -6/55

Answer 2

Ответ:

Пошаговое объяснение:

Б)

1) -6 2/3 - 2 4/15 = -6 10/15 - 2 4/15 = -8 14/15

2) -8 14/15 - 5 1/2 = -8 28/30 - 5 15/30 = -13 43/30 = -14 13/30

3) -14 13/30 : 1/15 = -433/30 * 15/1 = -433/2 * 1/1 = -433/2 = -216 1/2

4) 30 : 5/28 = 30 * 28/5 = 6 * 28/1 = 168/1 = 168

5) -216 1/2 + 168 = -48 1/2

Это числитель

6) 2 3/4 * 3 19/22 = 11/4 * 85/22 = 1/4 * 85/2 = 85/8

7) 85/8 : 42 1/2 = 85/8 : 85/2 = 85/8 * 2/85 = 1/4 * 1/1 = 1/4

Это знаменатель

8) -48 1/2 : 1/4 = -97/2 * 4/1 = -97/1 * 2/1 = -194/1 = -194

Это результат всего примера

В)

1) 33/54 - 11/16 = 264/432 - 297/432 = -33/432 = -11/144

2) 7/12 - 14/15 = 35/60 - 56/60 = -21/60 = -7/20

3) - (-11/144 * (-7/20)) = -(11/144 * 7/20) = -77/2880

4) 18 : 4 13/27 = 18 : 121/27 = 18 * 27/121 = 486/121

5) -77/2880 * 2 2/7 = -77/2880 * 16/7 = -11/180 * 1/1 = -11/180

6) -11/180 * 8/9 = -11/45 * 2/9 = -22/405

7) -22/405 * 486/121 = -2/5 * 6/11 = -12/55

Это числитель

8) 13/20 + 11/35 = 91/140 + 44/140 = 135/140 = 27/28

9) 7/22 - 23/33 = 21/66 - 46/66 = -25/66

10) -4 : 1 1/4 = -4 : 5/4 = -4 * 4/5 = -16/5

11) -16/5 * 1 2/9 = -16/5 * 11/9 = -176/45

12) -176/45 : 5/7 = -176/45 * 7/5 = -1232/225

13) -1232/225 * 27/28 = -44/225 * 27/1 = -1188/225

14) -1188/225 * (-25/66) = -18/9 * (-1/1) = 18/9 = 2

Это знаменатель

15) -12/55 : 2 = -12/55 * 1/2 = -6/55 * 1/1 = -6/55

Это результат всего примера