math
posted by Rinoa .
"Mahpee was selling magazine subscriptions. He earned $5 plus $0.50 for each subscription he sold. If Mahpee earned $25, use the equation 25=5 + 0.50n to find the number of subscriptions n he sold." How do I figure this out??

25=5+.50n
subtract 5 from each side.
multiply both sides by 2