bmlavers
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  • 21-01-2019
  • Mathematics
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Twice a number is decreased by 7 , and this quantity is multiplied by 3. The result is 9 less than 10 times the number. What is the number?

Respuesta :

AviMali
AviMali AviMali
  • 21-01-2019

Answer:

The missing number is equal to 3.

Step-by-step explanation:

(2x - 7) * 3 = 10x - 9.

6x - 21 = 10x - 9.

12 = 4x.

3 = x.

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