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  2. Drawing up a comprehensive list of words in English is important as a reference when learning a language as it will show the equivalent words you need to learn in the other language to achieve fluency. A big list will constantly show you what words you don't know and what you need to work on and is useful for testing yourself.

  3. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    In a sense, subtraction is the inverse of addition. That is, c = a − b if and only if c + b = a. In words: the difference of two numbers is the number that gives the first one when added to the second one. Subtraction follows several important patterns. It is anticommutative, meaning that changing the order changes the sign of the answer.

  4. Word problem for groups - Wikipedia

    en.wikipedia.org/wiki/Word_problem_for_groups

    Then the word problem in is solvable: given two words , in the generators of , write them as words in and compare them using the solution to the word problem in . It is easy to think that this demonstrates a uniform solution of the word problem for the class K {\displaystyle K} (say) of finitely generated groups that can be embedded in G ...

  5. Drug overdose deaths fall in 2023 for 1st time since pandemic ...

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    Rates of drug overdose deaths decreased in the United States for the first time since the COVID-19 pandemic began, according to new federal data published early Thursday. The rate of overdose ...

  6. Mbappé and Álvarez score as Madrid derby ends in 1-1 draw - AOL

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    Kylian Mbappé scored in his first capital derby against Atletico Madrid as Real Madrid fought back for a 1-1 draw and kept its slim lead of the Spanish league on Saturday. Next up for Mbappé and ...

  7. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    It is in Babylonian mathematics that elementary arithmetic (addition, subtraction, multiplication, and division) first appear in the archaeological record. The Babylonians also possessed a place-value system and used a sexagesimal numeral system which is still in use today for measuring angles and time.