Quote Originally Posted by Breella View Post
It's a relatively cheap but has 7 speeds.
If it's a cheap bike and only has 7 speeds, chances are it's very heavy. Still, unless the hills are very steep, you should be able to get up them in the easiest gear as you get more fit. There's no substitute for putting in the training time to get more fit (cardio and muscles), but heavy bikes do make it much more difficult to get up a hill.

Lighter bikes with more gears make riding up a hill easier than walking.