Hi everyone, I am a student only, have a very stupid question to ask (for most of you)

ther is a RX and want to make it a reading glasses only RX, I know the formula is (ADD + SPH), but what abt the follow case, what is the final RX for this case?pls help

OD
-2.25-0.50x050
OS
-2.25-1.00x090
ADD
+1.00 OU

when i do the calculation, it coome out a minus RX for a reading only RX