The distance from your house to the ice cream shop is 12 miles. your best friend’s house is on the segment between your house and the ice cream shop, and his house is 3 miles from the ice cream shop. how many miles is your house from your best friend’s house?

The distance between the your bestfriend's house to the ice cream shop is equal to 3 miles. Let h be the distance from your house to your bestfriends. The sum of these distances is equal to 12. The equation that best represents this is,
                               3 + h = 12
The value of h is equal to 9 miles. 

3.1 the only reason i know this is cause i got it wrong