The difference of twice a number and eight is 10

The equation is 2x-8=10

If you are looking for an equation, then that is 2X-8=10. If you are looking for the answer, then X, or the number missing, is 9. Since 9*2=18, and 18-8=10, then the number you are looking for is 9.

If you substitute the 9 back into your equation, it would look like this:

2 (9) - 8=10 or 18-8=10.