Cozy Closet children's store is having its annual winter sale, when every item in the store gets marked down. During the sale, pajama sets sell for less than full price. Mr. Dorsey purchases 3 matching pajama sets: one for each of his children. He pays a total of .
$
7
$
57
Which equation can you use to find how much money, each pajama set costs at full price?
f
,3
(
f
–
7
)
=
57
7
f
–
3
=
57
7
(
f
–
3
)
=
57
3
f
–
7
=
57
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