Respuesta :
Answer:
c, add 2m to both sides
Step-by-step explanation:
-2m + 3 = 5m + 7
Add 2m to both sides
-2m + 2m + 3 = 2m + 5m + 7
3 = 7m + 7
Subtract 7 from both sides
3 - 7 = 7m + 7 - 7
-4 = 7m
Divide both sides by 7
-4/7 = 7m/7
-4/7 = m
m = - 4/7