floresalexandria floresalexandria

12-12-2019
Mathematics

contestada

how to solve 21=3x+3y

Respuesta :

opheliachampon opheliachampon

12-12-2019

Answer:

x+y=7

Step-by-step explanation:

ok so first you have to divide 21 by three and then both threes by three so its just x+y and then 21/3 is 7 so the answer is x+y=7

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