Simplify 8c - 3f - c - 3f?

Answer 1

first place the c's and f's next to each other.

8c-c-3f-3f

now

8c-c = 7c

and

-3f -3f = -6f

your answer is 7c-6f

Remember that you cannot add of subtract from different letters you can only add of subtract like terms