What is #x-y# less than 0?

1 Answer
May 13, 2018

#y-x#

Explanation:

What is #5# less than #13#?

Obviously it is #8#, but how we arrived at it?

Surely it is #13-5=8# i.e. subtracting first number from the second.

Hence, for "What is #x-y# less than #0#?,

we must subtract #x-y# fro #0#

i.e. #0-(x-y)#

= #0-x+y#

= #y-x#