Question

(2a + 2b - c) + (- 4a + b - 7c) + (4a -3b + 6c) =

Answer 1

Answer:

2a-2b+12c

Step-by-step explanation:

2a+2b-c-4a-b+7c+4a-3b+6c

=2a-2b+12c

Answer 2

Answer:

(2a +2b-c) +(-4a+b-7c) +(4a-3b+6c) = 2a-2c Or 2(a-c)

Step-by-step explanation:

=(2a +2b-c) +(-4a+b-7c) +(4a-3b+6c)

=2a +2b-c -4a+b-7c+4a-3b+6c

=2a+4a-4a+2b+b-3b-c-7c+6c

=2a-2c Or 2(a-c)