Question

Add:

$a+b-3,b-a+3,a-b+3$

Answer 1

Given $a+b-3,b-a+3,a-b+3$
By adding the above values, we get
$=a+b-3+b-a+3+a-b+3$
Grouping the like terms
$=(a-a+a)+(b+b-b)-3+3+3$
$=a+b+3$
Hence, $a+b+3$ is the final answer.