Answer:

Explanation:
Now we have to,
→ Simplify the given expression.
The expression is,
→ 21 - 7v + v - 14
Let's simplify the expression,
→ 21 - 7v + v - 14
→ -7v + v + 21 - 14
→ (-7v + v) + (21 - 14)
→ (-6v) + (7)
→ -6v + 7
Hence, the answer is -6v + 7.