Try the below

=IF(D170,C17-D17,C17+(-D17))

OR
=IF(D17="","",C17-D17)

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---------------
Jacob Skaria


"jmfozzybear" wrote:

i do HATE MShelp

if cell d17 has something in it (0) i want to subtract c17-d17 or add c17
and -d17

please help! i could do it in C++