SOLUTION: Mr Smith is y years old and his son is 21 years younger write an expression using y to show his son's age and their total ages

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Question 1107477: Mr Smith is y years old and his son is 21 years younger write an expression using y to show his son's age and their total ages
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
y%2B%28y-21%29
2y-21-------total age

y-21--------son's age