решить по действиям 2 примера

(7/8 -5/12) * 1 1/11 - 1/2 + 3 1/6 : 2 1/3 = 1  5/14

7/8 - 5/12 = 21/24 - 10/24 = 11/24

11/24 * 12/11 = 1/2

1/2 - 1/2 = 0

19/6 * 3/7 = 19/14 = 1  5/14

3/5 : 1  1/5 + 3  1/2 * 4/5 + 3/4 * 5/6 - 1/4 : 1/2 = 3  3/10

3/5 * 5/6 = 1/2

7/2 * 4/5 = 14/5

3/4 * 5/6 = 5/8

1/4 * 2 = 1/2

1/2 + 14/5 + 5/8 - 1/2 = 3  3/10

Объяснение:

1

1) 7/8-5/12=(21-10)/24=11/24

2) 11/24×1 1/11=11/24×12/11=1/2

3) 3 1/6:3 1/3=19/6:10/3=19/6×3/10=19/20

4) 1/2-1/2=0

5) 0+19/20=19/20

2

1) 3/5:1 1/5=3/5:6/5=3/5×5/6=1/2

2) 3 1/2×4/5=7/2×4/5=14/5

3) 3/4×5/6=5/8

4) 1/4:1/2=1/4×2/1=1/2

5) 1/2+14/5+5/8-1/2=14/5+5/8=

=(112+25)/40=137/40=3 17/40