Answer:
Answer: (m+11)+(n+44)=m+n+55.
Step-by-step explanation:
Explanation: (m+11)+(n+44) XXX=m+11+n+44.
Simply (m+11)+(n+44) = m + n + 55
(m+11)+(n+44)
= m + 11 + n + 44
= m + n + 11 + 44
= m + n + 55
Hopes it's correct.
