Where to find the math details behind Form 1040, Line 1a? Is there a worksheet?

Hello,

 

My 1040 Line 1a has been adjusted.  It is not just the total of our W2, Box 1 (MFJ).  This is correct because I have an amount shown in W2, Box 11, and it must be subtracted from Line 1a, but included on 1040, Schedule 1, Line 8t.

 

Where in TurboTax can I see the math and details behind the amount calculated for Line 1a.  I have followed the links into the various worksheets, but I can not find where the subtractions (or additions for some people) are shown.  I am specifically interested to see where the Box 11 value is subtracted.

 

To be clear... I believe that TT is doing the right thing, but I can not see where the calc/math is being done.  This is important when explaining to others why their results are what they are.  I help a number of retired persons with their taxes, and they use TT.

 

Thanks,

 

HardwareFan