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Question

How old is Robert,if Marin is 9 years older than him and their ages make 21?
9 years ago

Answers

Ms. Sue
R + R + 9 = 21

2R = 12

R = 6

9 years ago
Jade
Thank you, but could you explain this solution for me , please?
9 years ago
Ms. Sue
R = Robert
R + 9 = Marin

Their two ages = 21.

The equation and its solution should be obvious.

9 years ago
Jade
Thank you very much.
9 years ago
Ms. Sue
You are very welcome.
9 years ago

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