Respuesta :
Answer:
n=9
Step-by-step explanation:
use the distributive property of multiplication
5n+3(n-4)=60
5n+3n-12=60
combine like terms
5n+3n-12=60
8n-12=60
add 12 to each side
8n-12=60
+12 +12
8n=72
then lastly divide by 8 on both sides
8n=72
/8 /8
n=9