Question

Select all the equations that the number 7 will make true

Answer 1

cheach each option

`\begin{gathered} (4)/(x)=(4)/(7) \\ \\ (4)/(7)=(4)/(7) \end{gathered}`

first option right

`\begin{gathered} (1)/(7)=x \\ \\ (1)/(7)=(1)/(7) \end{gathered}`

second option wrong

`\begin{gathered} (3)/(x)=(7)/(3) \\ \\ x=(9)/(7) \end{gathered}`

third option is wrong

`\begin{gathered} (x)/(14)=(1)/(2) \\ \\ x=(14*1)/(2) \\ \\ x=7 \end{gathered}`

fourth option is right

`\begin{gathered} (9)/(x)=63 \\ \\ x=(9)/(63)=(1)/(7) \end{gathered}`

fifth option is wrong