Question

how do i solve for x in lnx=5-x

Answer 1

You don't. It is not a matter of being clever enough. It CANNOT be done.

My first impression, based on your question, is "Why do you think you need to solve that for x?"

I would guess there is more to this question than you have presented.

Answer 2

i'm looking at https://secure-media.collegeboard.org/ap-student/pdf/calculus-ab/ap-2012-calculus-ab-scoring-guidelines.pdf question 2

Answer 3

i'm looking at the part above part (a) and wondering how they solved for x
can a calculator solve for x?

Answer 4

most scientific and graphing calculators can solve it numerically.