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02-11-2020
Mathematics

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Five times a number is the same as two times a number added 21

Respuesta :

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02-11-2020

Answer:

Our number is 7.

Step-by-step explanation:

We also know that it's 2x + 21 = 5x.

Now we solve.

21 = 5x - 2x

21 = 3x

7 = x

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