Question

please solve this................​

Answer 1

Answer:

ans is

Step-by-step explanation:

(3a-2b+5c) + (2a+5b-7c) + (-a-b+c)

3a-2b+5c + 2a+5b-7c -a-b+c

3a+2a-a -2b+5b-b +5c-7c+c

4a + 2b -c