Question

On his birthday, Jim brought $x+y+2$ candies to distribute among his classmates. If Jim had $x+y$ classmates and each of them got 1 candy each, he was left with candies.

Answer 1

Initially, Jim had $x+y+2$ candies.
He gave 1 candy to each of his $x+y$ classmates.
$\Rightarrow$ He distributed $x+y$ candies among his classmates.
$\because$ Number of candies is a like term, it can be added or subtracted.
$\therefore$ Number of candies left with him

$=(x+y+2)-(x+y)$

$=x+y+2-x-y$

$=2$

$\therefore$ Jim was left with $2$ candies.