Question

3m-2m+5m
5n-3+n+6
5pq+k-7pq-k
4a-5b+5b+4a

Answer 1

4m-2m+5m=7m
5n-3+n+6=6n+3
5pq+k-7pq-k=-2pq
4a-5b+5b+4a=8a