Respuesta :
yes it is! when u plug 3 into m, u can use PEMDAS to figure out the fact that the left side will equal the right side!
Answer:
yes
Step-by-step explanation:
3=m
3(m + 1) = 12
3(3+ 1) = 12
3×3 + 3×1 =12
9 + 3 =12