Răspuns:
Explicație pas cu pas:
a) 5·7/10=7/2
b)4·5/2=10
c) 9·5/18=5/2
d)9·5/21=15/7
e)10·2/15=4/5
f)14·3/7=6
g)4/7·7/22=2/11
h)16/3·9/28=4·3/7=12/7
i)15/14·1/3=5/14
j)81/10·1/6=27/20
