Mei bought a magazine and some notepads for $46
A magazine cost $6
A notepad cost $5
Let n represents number of notepads bought
The expression to relate the sum of a magazine and "n" number of notepads bought is given below as,
[tex]\begin{gathered} \text{Cost of a magazine+Cost of }n\text{ notepads=\$46} \\ \text{\$6+n(\$5)=\$46} \end{gathered}[/tex]Solving to find the value of n,
[tex]\begin{gathered} 6+5n=46 \\ \text{Collect like terms} \\ 5n=46-6 \\ 5n=40 \\ \text{Divide both sides by 5} \\ \frac{5n}{5}=\frac{40}{5} \\ n=8 \end{gathered}[/tex]Hence, she bought 8 notepads