First you had to switch sides of equation.
[tex]2(i+w)=p[/tex]
Then you divide by two from both sides of equation form.
[tex]\frac{2(i+w)}{2}= \frac{p}{2}[/tex]
Simplify.
[tex]i+w=\frac{p}{2}[/tex]
Next, subtract by i from both sides of equation form.
[tex]i+w-i=\frac{p}{2}-i[/tex]
Finally, simplify by equation.
[tex]w=\frac{p}{2}-i[/tex]
Final answer: [tex]\boxed{w=p/2-i}[/tex]
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie