Answer:
n=3
Step-by-step explanation:
-4n-40=-2(7n+5)
Distribute the -2
-4n -40 = -14n -10
Add 14n to each side
-4n+14n -40 = -14n +14n-10
10n -40 = -10
Add 40 to each side
10n -40+40 = -10+40
10n = 30
Divide each side by 10
10n/10=30/10
n =3
