Tính:

Tính:
1) (-36/45 - 25/100 - 22/33) : ( -309/120)

2) 19/24 - 1/2 - 1/3 - 7/24

3) 2/5 + -1/6 - 3/4 - -2/3

4) (4/3 - 2/3)(7/10 - 3/10) - 1/5(8/6 - 7/6)

5) 3/15 x 5/9 : -18/17 x 14/17

6) (4/5 + 1/2)(3/15 - 8/13)

7) (-3/4 + 7/3) : (2/9 - 5/2)

8) 3/4[1/5 - (4/7 + 3/5 : -7/5)]

9) (4/3 + 8/3)(7/4 - 6/4) : (7/5 + 12/5)