Respuesta :

ThatMissed

Answer:

m = 1

Step-by-step explanation:

4 x 1 + 3 = 7

nermay7

Answer:  Addition property

Step-by-step explanation:

In the equation 4m + n = 7  , it indicates that n is 3, which means 3 has been added to it to get 4m + 3 = 7   so 3 has been added on each side.