Question

If you take a number, times by 5 then add 7. You get the same as if you took the number, times by 9 then add 3. What is the number?

Answer 1

Answer: The number is 1

Explanation:

5x + 7 = 9x + 3

5x + 7 - 5x = 9x - 5x + 3

7 = 4x + 3

7 - 3 = 4x + 3 - 3

4 = 4x

x = 1

Check work:

5(1) + 7 = 12

9(1) + 3 = 12

It works