Question

The sum of Pete's and Sam's ages is 30. Five years ago, Pete was 3 times as old as Sam. How old is Sam?

Let P = Pete's age, S = Sam's age, and P + S = 30. Which of the following equations would complete the system?



P - 5 = 3S

P - 5 = 3S - 5

P - 5 = 3S - 15

Answer 1

@mathmale

Answer 2

@Mertsj

Answer 3

@jigglypuff314

Answer 4

(P-5) = 3(S-5)

Answer 5

thank you

Answer 6

so number 2

Answer 7

distributive property