What is the answer to 3x+4w+7x-2x

Answer:8x+4w

Step-by-step explanation:

So the question is

3x+4w+7x-2x

We take the variables that are the same which are

3x

7x

-2x

We add all of these together

3x+7x + (-2x) = 8x

8x is our answer, so we take 8x and add 4w to it

8x+4w

This is the final answer, because there is nothing else left to do