I have the following two functions in the following cells on my worksheet.

AJ10 =IF(SUM(AB7:AG7)<0,(E47+SUM(AB7:AG7))/(C47+SUM(AB4:AG4)),"")

AJ17 =IF(AB15<"",IF(AB14<"",(((AB15+C47)*AB14)-E47)/AB15,""),"")

The first formula uses C47 and the second uses C47 and E47. These cells were
the last row of my sheet when I made them. However this row changes and row
57 is now the last row. I need help setting up my formulas so they update
accordingly.