SOLUTION: Preet is 5 years older than Ben. She’s also 7 years older than Jessy. The sum of the ages is 21. How old is each person

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Question 1127537: Preet is 5 years older than Ben. She’s also 7 years older than Jessy. The sum of the ages is 21. How old is each person
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
Preet          p
Ben           p-5
Jessy         p-7
SUM           21

p%2Bp-5%2Bp-7=21
Solve...