Question

Add 4a+2b-c to a+6b+2c​

Answer 1

a+6b+2c

+4a+2b-c

[5a+8b+c] answer

and in second way-

a+6b+2c+(4a+2b-c)

a+6b+2c+4a+2b-c

a+4a+6b+2b+2c-c

[5a+8b-c] answer

I hope it helps you