bonjour
a)80/120=(80÷5)/(120÷5)=16/24=(16÷8)/(24÷8)=2/3
b)48/72=(48÷8)/(72÷8)=6/9=(6÷3)/(9÷3)=2/3
c)375/450=(375÷5)/(450÷5)=75/90=(75÷5)/(90÷5)=15/18=(15÷3)/(18÷3)=5/6
d)216/270=(216÷9)/(270÷9)=24/30=(24÷6)/(30÷6)=4/5
e)630/450=(630÷9)/(450÷9)=70/50=(70÷10)/(50÷10)=7/5
f)1300/180=(1300÷10)/(180÷10)=130/18=(130÷2)/(18÷2)=65/9
