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08-05-2021
Mathematics

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What is the first step to prove that 9n - 4n is divisible by 5?

Respuesta :

mortatha321 mortatha321

08-05-2021

Answer:

Collect like terms, ie do 9n-4n = 5n ...

5n will then be exactly divisible by 5 as 5n / 5 = n

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