$t=a$in LaTex, I get "t = a". If I write
$t=?$I get "t =?" but I want to get "t = ?". The ? shall have the same distance from the equals sign as any other variable or letter. Is there a way to to treat the "?" the same way as any other letter in a formula?
To make clear how $t=a$ and t=? look like, I have added a screenshot.