1.4 plus n plus 3.6 equals 7.5 What is n?

This is a simple question. N= 7.5-(3.6+1.4). N=2.5

1). 3.6+1.4=5

2). 7.5-5=2.5

N=2.5

So... 1.4+"2.5"+3.6=7.5