a)5/7÷...=10
5/7÷10=...
5/7÷10=5/7×1/10=5/70=1/14(simplificam prin 5)
b)...÷1/15=3/11
...=3/11×1/15=3/165=1/55(simplificam prin 3)
c)17 1/2÷...=3 1/2
35/2÷...=7/2
35/2÷7/2=...
35/2÷7/2=35/2×2/7=70/14=5
d)4 1/11÷...=1 4/11
45/11÷...=15/11
45/11÷15/11=...
45/11÷15/11=45/11×11/15=495/165=3
e)...÷14=5 1/7
...÷14=36/7
...=36/7×14=504/7=72
f)226/125÷...=339/125
226/125÷339/125=...
226/125÷339/125=226/125×125/339=226×125/125×339(simplificam prin 125)=226/339=2/3(simplificam prin 113)
