Question

398 + 4 907: k = 405​

Answer 1

398+4907:k = 405

4907:k = 405-398

4907:k = 7

k = 4907:7

k = 701

Answer 2

It seems like you've written an equation, but it's a bit unclear. Let's break it down:

398 + 4 907: k = 405

It appears that you have an addition operation (398 + 4 907) followed by a colon (:) and then an equation with "k" equal to 405.

If you meant to ask if 398 + 4,907 equals 405, the answer is no.

398 + 4,907 = 5,305

So, the equation as written is not correct. If you had a different question or if there's a mistake in the equation, please clarify, and I'll be happy to help further.