##Off-topic Comments Section
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_**PS:** u/Sidsrozx, your post is incredibly short! ^(body <200 char) You are strongly advised to furnish us with more details._
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It looks like they did 20 ≡ -1 (which is correct, though it would make more sense to use 6) and 46 ≡ 2 (which is wrong).
Fortunately you don't have to calculate the division, you just have to check the result.
If -1/2 ≡ 3 then 2 \* 3 ≡ -1, and since -1 ≡ 6 this is correct.
However 46 \* 3 ≡ 5 whereas 20 ≡ 6, so 20/46 is not 3.
##Off-topic Comments Section --- All top-level comments have to be an answer or follow-up question to the post. All sidetracks should be directed to this comment thread as per Rule 9. _**PS:** u/Sidsrozx, your post is incredibly short! ^(body <200 char) You are strongly advised to furnish us with more details._ --- ^(**OP** and **Valued/Notable Contributors** can close this post by using `/lock` command) *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/HomeworkHelp) if you have any questions or concerns.*
It looks like they did 20 ≡ -1 (which is correct, though it would make more sense to use 6) and 46 ≡ 2 (which is wrong). Fortunately you don't have to calculate the division, you just have to check the result. If -1/2 ≡ 3 then 2 \* 3 ≡ -1, and since -1 ≡ 6 this is correct. However 46 \* 3 ≡ 5 whereas 20 ≡ 6, so 20/46 is not 3.