Given
The equation:
3x-8y=5.
To find the value of y when x is 15.
Explanation:
It is given that,
[tex]3x-8y=5[/tex]Since x=15.
Then,
[tex]\begin{gathered} 3(15)-8y=5 \\ 45-8y=5 \\ 8y=45-5 \\ 8y=40 \\ y=\frac{40}{8} \\ y=5 \end{gathered}[/tex]Hence, the value of y is 5.