Question
How old is Robert,if Marin is 9 years older than him and their ages make 21?
Answers
Ms. Sue
R + R + 9 = 21
2R = 12
R = 6
2R = 12
R = 6
Jade
Thank you, but could you explain this solution for me , please?
Ms. Sue
R = Robert
R + 9 = Marin
Their two ages = 21.
The equation and its solution should be obvious.
R + 9 = Marin
Their two ages = 21.
The equation and its solution should be obvious.
Jade
Thank you very much.
Ms. Sue
You are very welcome.