Respuesta :

Answer:

m + 7n + 12

Step-by-step explanation:

(4m + 7n) + (-3m + 12)

   4m + 7n - 3m + 12

              4m - 3m + 7n + 12

                    m + 7n + 12

(4m + 7n) + (-3m + 12)

First you must combine like terms. In this case there are only one set of like terms:

4m and -3m

(4m - 3m) + 7n + 12

m + 7n + 12

Hope this helped!

~Just a girl in love with Shawn Mendes