....................
![class=](https://ro-static.z-dn.net/files/dc6/9c6c5590b4c876f74e13711ffec9a2ce.jpg)
Explicație pas cu pas:
(3h-2/h)2=(5/2)h
6h-4=5h
-4=5h-6h
-4=-h
4=h