User talk:122.173.56.107

December 2020
Hello, I'm SkiMaskA. I noticed that you recently removed content from Marginal rate of substitution without adequately explaining why. In the future, it would be helpful to others if you described your changes to Wikipedia with an accurate edit summary. If this was a mistake, don't worry; the removed content has been restored. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. — SkiMaskA  ⭐ (💬Talk) 10:22, 23 December 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.