Answer:
[tex]\Large \boxed{Y=5}[/tex]
Step-by-step explanation:
[tex]\textnormal{First, divide by 90 from both sides of the equation.}[/tex]
[tex]\displaystyle \frac{90y}{90}=\frac{450}{90}[/tex]
[tex]\textnormal{Solve to find the answer.}[/tex]
[tex]\displaystyle 450\div90=5[/tex]
[tex]\displaystyle y=5[/tex], which is our answer.
Hope this helps!
