Question

Rút gọn rồi tính :
a.4/16+1/4
b.15/25+6/10
c.5/9+21/27

Answer 1

a: =1/4+1/4=2/4=1/2

b: =3/5+3/5=6/5

c: =5/9+7/9=12/9=4/3

Answer 2

a, 1/4+1/4=2/4=1/4

b, 3/5+3/5=6/5

c, 5/9+7/9=12/9=4/3

Answer 3

a)1/4+1/4=2/4=1/4

b) 3/5+3/5=6/5

c) 5/9+7/9=12/9=4/3

Answer 4

a)1/2

b)6/5

c)4/3