Respuesta :
Answer:
9x + 3m + 8n + 14
Step-by-step explanation:
Add all like terms.
7 -2 + 9 = 14
You can't do anything with the variables since they're all different.
9x + 3m + 8n + 14
Answer:
3m+8n+9x+14
Step-by-step explanation:
btw try math-way!! helps