Answer:
w = lap/ h - la
Explanation:
1 Multiply both sides by a(w+p)a(w+p).
la(w+p)=wh
2 Expand.
law+lap=wh
3 Subtract law from both sides.
lap=wh-law
4 Factor out the common term w.
lap=w(h-la)
5 Divide both sides by h-la.
lap/h - la = w
6 Switch sides.
w = lap/ h - la