Answer:
The answer is 14w
Step-by-step explanation:
This is a simple process called combining like terms.
This means to add or subtract all variables together that have the same variable. In this case all the numbers here have the same variable. Since there is a variable with just w and no number, this means that it is one. like this 1w. The one is unneeded so it is not written but there is an imaginary 1 in front of the w. So we will add 1w to 6w. This will become 7w. Then we add 7w to 7w and this is 14w and that is your simplified answer.
If you have any questions please feel free to ask in the comments.