Answer:
m+8n
Step-by-step explanation:
-(-m-8n)
When there is a - in front of an expression in parentheses, change the sign of each term in the expression
m + 8n
Step-by-step Explanation
[tex] -(-m-8n) \\ = - \times ( - m) - \times (- 8n) \\ = m + 8n[/tex]
