Answer:
-3+8n
Step-by-step explanation:
7+8n-10
7 and 10 are both constants, so you'd add them together. However, since 10 is negative, it become 7+(-10), which is also just 7-10. 7-10=-3. Since 8n is the only number with a variable, it cannot be combined. Therefore, the expression becomes -3+8n.
