How to include 2 separate IF and ISBLANK functions in 1 cell? [closed]

edit

Is this possible? I've searched online and tried shifting things around, but all methods have failed. I want the function to follow the following steps:

1. If I30 is "A" use J30
   • but if J30 is blank, leave field blank
2. If I30 is not "A", use K30
   • but if K30 is blank, leave field blank

Below are my attempts:

=IF(AND(I30="A",IF(AND(ISBLANK(J30),"",J30)),K30))
=IF(AND(I30 = "A",(ISBLANK(J30),"",J30),IF(AND(ISBLANK(K30),"",K30))))
=IF(AND(I30<>"A",(ISBLANK(J30),"",K30)))
=IF(AND(I30<>"A",(ISBLANK(J30),"",K30~J30)))
=IF(I30<>"A",1,3)

The 2nd to last function always changes the ",J30" at the end to "~J30", btw.

To be clear, this function for ISBLANK works just fine:

=IF(ISBLANK(J30),"",J30)

Edit: Corrected the ISBLANK function.