Thực hiện phép tính
Câu 1 Thực hiện phép tính (tính nhanh nếu có thể)
a)3/5 :(-1/15 -1/6) +3/5 :-1/3 - 1/1/15)
b)(-3/4 + 5/13 ) :2/7 - (2/1/4 + 8/13 ) : 2/7
c) (1/2 - 13/14) :5/7 - (-2/21 + 1/7 ) : 5/7
d)(-12 . 2/7 + 8/9 : 3/1/2 - 2/7 . 5/18) . 3/1/2
e)(13/3/5 + 4/3/4) - 8/3/5
g) 11/1/4 -(2/5/7 + 5/1/4)
h)(8/5/11 + 3/5/8) - 3/5/11
i) -1/4 . 13/9/11 - 0.25 .6/2/11
k) 4/9 :(-1/7) + 6/5/9 :(-1/7)
a)3/5 :(-1/15 -1/6) +3/5 :-1/3 - 1/1/15)
b)(-3/4 + 5/13 ) :2/7 - (2/1/4 + 8/13 ) : 2/7
c) (1/2 - 13/14) :5/7 - (-2/21 + 1/7 ) : 5/7
d)(-12 . 2/7 + 8/9 : 3/1/2 - 2/7 . 5/18) . 3/1/2
e)(13/3/5 + 4/3/4) - 8/3/5
g) 11/1/4 -(2/5/7 + 5/1/4)
h)(8/5/11 + 3/5/8) - 3/5/11
i) -1/4 . 13/9/11 - 0.25 .6/2/11
k) 4/9 :(-1/7) + 6/5/9 :(-1/7)