Hello there!
Solve for w.
[tex]4a=2l w[/tex]
First you had to flip by the equation.
[tex]2l w=4a[/tex]
Then divide by 21 from both sides.
[tex]\frac{2lw}{2l}=\frac{4a}{2l}[/tex]
Simplify is should be the right answer.
[tex]Answer ---> w=\frac{2a}{l}[/tex]
Hope this helps!
Thank you for posting your question at here on Brainly.
-Charlie
