Question

Jeremy said I added 3/4+1/5 and got 4/9, does Jeremy’s answer make sense? Explain how you know without calculating the answer

Answer 1

If

`(3)/(4)+(1)/(5)=(4)/(9)`

That would imply that 9 is a common multiple of 4 and 5, which is false since 9=3^2.

Additionally, 3/4 is greater than 4/9; so 3/4+1/5 has to be greater than 4/9.