Tính bằng cách thuận tiện
a) [5/8 + (- 3/4)] + 15/6
d) - 3 - 2/3 + (- 10/9 - 25/3) - 5/6
① 8/19 + (- 15/17) + 4/23 - 2/17 + 11/19
) 4/5 - [(- 5/2) - (- 3/4 + 2/8)]
) 2/5 - (4/3 + 4/5) - (- 1/9 + 0, 4) + 11/9 k)
m) - 14/12 + 0, 65 - (- 7/42 + 0, 35)
0) - 3/7 + (3 - 3/4) - (2, 25 - 10/7)hi
d) - 3 - 2/3 + (- 10/9 - 25/3) - 5/6
① 8/19 + (- 15/17) + 4/23 - 2/17 + 11/19
) 4/5 - [(- 5/2) - (- 3/4 + 2/8)]
) 2/5 - (4/3 + 4/5) - (- 1/9 + 0, 4) + 11/9 k)
m) - 14/12 + 0, 65 - (- 7/42 + 0, 35)
0) - 3/7 + (3 - 3/4) - (2, 25 - 10/7)hi