Hey everyone, I need some help here. I'm 5'9'' and weight around 185lbs. I started working out again, I stopped for a couple years and in that time I lost alot of muscle and replaced it with fat. My body fat percentage is much higher than my muscle and I basically want to lower my fat percentage and increase my muscle. I started to eat healthy again I run 1hour every other day, plus I go on a stationary bike everyday from anywhere to 30-45min.
I'm content with my cardio, it's the weight training I'm having a bit of difficulty with. See right now I'm really out of shape and my goal is to lose weight and gain muscle but one other thing I've really noticed is that I'm very very weak right now, I probably can't do more than 5 push ups right now (sad, I know

), I need to gain alot of strength back and become stronger.
So my question is should I do low reps and high weight or low weight and high reps?
I know that low reps and high weight is better for increasing strength and high reps and low weight is better for slimming down, that's why I'm having trouble with this.
Thanks in advance.