Question

sum of a+b ,b-c,a-b+c and c-a+b is​

Answer 1

Answer:

$a + 2b + c$

Step-by-step explanation:

$(a + b) + (b - c) + (a - b + c) + (c - a + b)$

$= a + b + b - c + a - b + c + c - a + b$

$= a + a - a + b + b - b + b - c + c + c$

$= a + 2b + c$