04-12-2020
Mathematics

contestada

21 = 3 + 4n + 5n can someone solve this but with showing work please??

Respuesta :

hermionegranger59 hermionegranger59

04-12-2020

21 = 3 + 4n + 5n

=> 21 - 3 = 4n + 5n

=> 18 = 4n + 5n

=> 18 = 9n

=> 18/9 = n

=> 2 = n

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