how do I add two cells in Numbers
I know the answer must be really simple, but so far I cannot manage to do a simple calculations.
All I want to do is add figures from two seperate cells E30 and E31. Each of these cells have the sub totals of cells above, and I just want to have the grand total by adding the numbers in both of the above cells.
Thanks
MacBook Pro, OS X Mountain Lion (10.8.2)