Question

subtract the sum of a+b+c and -a+2b+c from the sum of -2a+2b-c and a-b+2c​

Answer 1

Explanation:

sum of fuest two eq= 3b+2c

sum of last two eq=-a+b+c

a/q

-a+b+c-3a-2c

-4a+b-c is the answer