Answer:
n = -40
Explanation:
n/10 = -4
n/10 x 10 = -4 x 10
n = -40
Multiply 10 on the side w/ the variable and do the same on the other side of the equal sign (this is a rule while solving for variables: something you do to one side, you do the same to the other).
Then, you got your answer. Hope I helped <3