Step 1: Bring 4x to the right side by subtracting it to both sides
(4x-4x)-5y= 10 - 4x
-5y = 10 - 4x
Step 2: Isolate y by dividing -5 to both sides
[tex]\frac{-5y}{-5} = \frac{10-4x}{-5}[/tex]
y = [tex]\frac{4x}{5} - 2[/tex]
Hope this helped!