Question

which expression represents the sum of 2x-5y and x+y

Answer 1

2x-5y + (x+y)

= 2x - 5y + x + y
= 3x -4y ------>combine like terms

Answer 2

Which expression represents the sum of $2x-5y$ and $x+y$ ?

Answer :                                              

We have to find the sum of the given two expressions, so we will add the like terms together.

$2x-5y+x+y$ or simplify it as

$2x+x-5y+y$

This becomes, $3x-4y$.