keyboard key +/=
I have a alphanumeric keyboard with my MacMini i5 2011, the problem is that the key =/+ is inverted, when I press this key it should write "+" but write "=", it should write "=" when press the shift key while I press the key. It's wrong, how could I fix it? Thanks for your help.
This is the incorrect
I need like this
Mac mini, OS X Mountain Lion (10.8.5)