Answered

Marta and Kim are sisters. Five years ago, Kim’s age was twice as great as Marta’s age. If Marta is now m years old, which expression represents Kim’s age now?

Sagot :

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k = 2(m-5)
k + 5 = 2(m-5) +5
k+ 5 = 2m - 10 + 5
k+5 = 2m - 5

Kim is now (2m - 5) years old

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