Answer:
[tex]7m + 5[/tex]
Step-by-step explanation:
If you "open up" the parentheses, you would get:
[tex]12m+1-5m+4[/tex]
Which, if you combine like terms, is:
[tex]7m+5[/tex]
Hope this helps :)
(12m + 1) - 5m + 4
12m + 1 - 5m + 4
12m + 5 - 5m
= 7m + 5
