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11-08-2022
Mathematics

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The sum of a number and 20 is three times the number. what is biggest prime number less than the number?

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11-08-2022

Answer:

7

Step-by-step explanation:

let x be the number.

x + 20 = 3x

20 = 3x -x

20 = 2x

x = 10

The biggest prime number less than 10 is 7

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