re: #162 Nyet
Your correct equations were a part of the right answer; the answer may not have been *complete*, but that’s another issue. OTOH, 2+2=4 (in base 10), never 5. There’s only one right answer.
PS: also, in even slightly complex tasks merely giving the correct number at the end, without the solution steps, will usually (at least in Russia and some other countries, hopefully also in the US) result in zero points. So it’s already a part of the teachers’ understanding that it’s the solution that counts together with the answer. It’s not, however, the “right answer” those particular pomo woo-woo peddlers mean.