a1/2-(-2/5)+1/3+5/7--1/6+-4/35+1/441

[-1/2-[-3/5]+[-1/9+1/71-[-2/7]+4/35-7/18

1/3-3/4-[-3/5]+1/64-2/9-1/36+1/15

-5/7-[-5/67]+13/30+1/2+[-11/6]+17/14-[-2/5]

[3-1/4+2/3]-[5-1/3-6/5]-[6-7/4+3/2]

[5+1/5-2/9]-[2-1/23-73/35+5/6]-[8+2/7-1/18]

làm giúp mình mình đang cần gấp

Tính nhanh nếu có thể.Câu1:(-1/2) -(-3/5) + (-1/9)+1/71-(-2/7)+4/35-7/18.Câu 2:(3-1/4+2/3)-(5-1/3-6/5)-(6-7/4+2/3)

Tính

a, (-2/3) + 3/4 -(-1/6)+(-2/5)

b, (-2/3) +(-1/5)+ 3/4 - 5/6- (-7/10)

c, 1/2 - (-2/5)+1/3+5/7-(01/6)+(-4/35) +1/41

d, (1/100.99) - (1/99.98)-(1/98.97)-...-(1,3.2)- (1/2.1)

1/2-(-2/5)+1/3+5/7-(-1/6)+(-4/35)+1/41