Помогите решить два примера

1) 2,07: (-2,3) + 13,13:1,3

2) (1-1,5*1,4) * (3,2)

1)

2 1/3 : 2 2/3 * 1 3/5 = 7/3 : 8/3 * 8/5 = 1,4

7/3 : 8/3 = 7/3 * 3/8 = 7/8

7/8*8/5 = 7/5 = 1,4

2)

2 1/4 * 12/13 : 3 3/8 = 9/4 * 12/13 : 27/8 = 8/13

9/4*12/13=27/13

27/13*8/27=8/13

3)

3 2/3 : 7 1/3 * 2/5 = 11/3 : 22/3 * 2/5 = 0,2

11/3*3/22=1/2

1/2 * 2/5 = 1/5 = 0,2

4)

1 1/9 * 2 1/5 : 7 1/3 = 10/9 * 11/5 : 22/3 = 1/3

10/9*11/5=22/9

22/9*3/22 = 1/3