Question

[Lưu kim linh]

tính:

a).2/5+3/10-1/2

b).8/11+8/33x3/4

c).7/9x3/14:5/8

d).5/12-7/32:21/16

đầy đủ tick nhé

Answer 1

[Nguyễn Khánh Linh]

a)2/5+3/10-1/2=7/10-1/2=2/10=1/5

b)8/11+8/33x3/4=8/11+2/11=10/11

c)7/9x3/14:5/8=1/6:5/8=8/30+4/15

d)5/12-7/32:21/16=5/12-1/6=3/12

nha

Answer 2

[Đỗ Minh Ngọc]

a) 2/5+3/10-1/2

= 4/10+3/10-5/10

= 2/10 = 1/5

b) 8/11+8/33x3/4

= 8/11+2/11

= 10/11

c) 7/9x3/14:5/8

= 1/6:5/8

= 1/6x8/5

=4/15

d) 5/12-7/32:21/16

= 5/12-7/32x16/21

= 5/12-1/6

= 5/12-2/12

= 3/12