If you add 7 to a number, multiply the sum by 3, and subtract 47 from the product, you will get the number you started with. What is the number?

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Mathematics

10 October, 16:23

If you add 7 to a number, multiply the sum by 3, and subtract 47 from the product, you will get the number you started with. What is the number?

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Answers (1)

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Curtis Curry · Answer 1

The number is 13.

we can calculate this as;

let x is the number

((x + 7) x 3) - 47) = x

(3x + 21) - 47 = x

3x + 21 - x = 47

2x + 21 = 47

2x = 47 - 21

2x = 26

x = 26/2

x = 13