Question

Answer 1

a: x/7=22/77

=>x/7=2/7

hay x=2

b: 8/24=1/x

=>1/x=1/3

hay x=3

Answer 2

\(\dfrac{x}{7}=\dfrac{22}{77}\Rightarrow x\times77=7\times22=154\\ \Rightarrow x=154:77\\ \Rightarrow x=2\\ \dfrac{8}{24}=\dfrac{1}{x}\Rightarrow8\times x=24\times1=24\\ \Rightarrow x=24:8\\ \Rightarrow x=3\)