Refer to the attachements
It is the third option y+2=-3(x-1)
Answer:
-n+33
Step-by-step explanation:
1. do distributive property
2. 7y+21-8n+12
3. combine like terms
4. 7n and 8n both are like terms so, 7n-8n= -1n or -n
5. 21 and 12 are like terms so, 21+12= 33
answer is: -n + 33 or -1n + 33