Mathematics: 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?

If you add 7 to a number, multiply the sum by

Ответ:

PaavanPatel

14.03.2022

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

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Ответ:

starr3971

17.09.2022

Mathematics

23: 8-5×(-4)

24: 9+(-36)÷(-4)

Follow PEMDAS (parentheses exponents multiplication division addition subtraction)

23:

5×(-4)= -20

8-(-20) goes to 8+20.

8+20=28

24:

9+(-36)÷(-4)

-36÷(-4)=9

9+9=18

Bold is the answers.

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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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