Pilar bought items for her camping trip.
She bought times as many packets of drink mix as tent stakes.
She also bought more bottels of water than tent stackes.
Write and solve an equation to discover how many tent stackes she bought.
\Find an equation.
\Let the number of tent stakes be .
She bought times as many packets of drink mix as tent stakes, then the number of packets of mix are
.
She bought more bottles of water than tent stackes, then bottles of water is
.
Her total bought items are .
The sum of the number of tent stake, packets of drink mix and bottles of water equal .
The equation is .
Find how many tent stackes she bought :
\ (Original equation)
(Add common terms)
(Subtract
from each side)
(Apply additive inverse property :
)
(Divide each side by
)
(Cancel common terms)
Therefore, number of tent stakes are .
Check :
\ (Original equation)
(Substitute
in the equation)
(Add inside terms)
(Simplify)
The equation is .
The number of tent stakes are .