Answer :
By using combine like terms,
8v+w+7-8v+2w
8v-8v+2w+w+7
2w+w+7
3w+7
The answer for this problem is 3w+7
8v+w+7-8v+2w
8v-8v+2w+w+7
2w+w+7
3w+7
The answer for this problem is 3w+7