Answer :
Answer:
[tex]w = \frac{alp}{h - al} [/tex]
Step-by-step explanation:
[tex]l = \frac{wh}{a(w + p)} [/tex]
Multiply both sides by a(w + p)
[tex]al(w + p) = wh[/tex]
Open the bracket
[tex]alw \: + alp \: = wh[/tex]
Collect like terms
[tex]wh - alw= alp[/tex]
Factorise
[tex]w(h - al) = alp[/tex]
Divide both sides by h - al
[tex]w = \frac{alp}{h - al} [/tex]
