Increase root partition by reducing /home

I need to increase root partition space by reducing /home, in a Centos 6.6,my situation is this:

/dev/mapper/VolGroup-lv_root 50G 46G 1,6G 97% 

/ tmpfs 1,9G 0 1,9G 0% 

/dev/shm /dev/sda1 477M 61M 391M 14% /boot 

 /dev/mapper/VolGroup-lv_home 140G 3,9G 129G 3%  /home 

Is it possible?

1. umount /home

$ umount /home

2. shrink the /home filesystem

$ fsck -f /dev/mapper/VolGroup-lv_home

$ resize2fs /dev/mapper/VolGroup-lv_home 80G

3. shrink the /home logical volume

$ lvreduce -L -40G /dev/mapper/VolGroup-lv_home

4. resize the /home partition to the size of the LV

$ resize2fs /dev/mapper/VolGroup-lv_home

5. extend the /root logical volume

$ lvextend -L +40G /dev/mapper/VolGroup-lv_root

6. extend the /root filesystem

$ fsck -f /dev/mapper/VolGroup-lv_root

$ resize2fs /dev/mapper/VolGroup-lv_root

7. mount /home

$ mount /home

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