Gaing free space after deleting partiton
I divided my 3TB Fusion drive into two exact halves. After deleting one of the partitions I'm trying to increase the size of Macintosh HD back to 3TB. That is no possible and more than half of a diagram is hashed and Macintosh HD remains in the half size.
How can I get back my free space?
iMac, macOS High Sierra (10.13.3)