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16-11-2021
Mathematics

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Twice the sum of a certain number and 36 is 90?

Respuesta :

hoangnhan123654 hoangnhan123654

17-11-2021

Step-by-step explanation:

Let the number be x

According to the question

2(x+36)=90

2x+72=90

2x=90-72

2x=18

x=18/2

x=9

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