Question

[viet bach Hoang]

rút gọn rồi tính

a.4/5+3/15

b.2/3+32/24

c.5/6+15/18

Answer 1

[Kai2209]

a.4/5+3/15 = 4/5+ 3/15:3=4/5+1/5=5/5

b.2/3+32/24=2/3+32/24:8=2/3+4/3=6/3

c.5/6+15/18=5/6x3+15/18=15/18+15/18=30/18