What to enter for Line 35 in Form 6251 if missing in 2017 tax return?

[asdf]

In the section "Tell us about your 2017 tax return", because my 2017 return includes Form 6251, it asks to enter the amount listed in Form 6251, Line 35. However, I don't see Line 35 in Form 6251 in my tax return from last year.

I used TurboTax last year, so I'm not sure. In the tax return from last year's turbotax, I see form 1040 but not 1040A. But I do see a value entered under "Enter federal adjusted gross income from Form 1040, line 37; 1040A, line 21; or 1040EZ, line 4"

What should I enter for this?

[KarenJ]

The line 35 on Form 6251 is transferred to the 2017 1040, page 2 line 45.  So you can find the number on the 1040.