If you double the value of a number and subtract six, you'll have 12. Which equation is this?
6-2n = 12
2n-6 + 12
2n - 6 = 12
6 - 2n + 12
BONUS: What's the number?

The equation would be 2n-6=12 and for the bonus the number would be 9

It’s 2n - 6 = 12. The 2 represents the doubling of a number (n is the variable that stands for any number) and the - 6 is the subtracting six part of the problem to get 12. If you take the 6 and move it to the other side (adding it to the 12) which gets you 18 and then divide that by 2 to get the variable n by itself, you’ll get n = 9.