math
posted by Rivan on .
find p
160/p=21

160/21=p
(multipy both sides by p, divide both sides by 21) 
p = 160/21~7.62
posted by Rivan on .
find p
160/p=21
160/21=p
(multipy both sides by p, divide both sides by 21)
p = 160/21~7.62