Explanation:
"The difference of twice of a # and 10 is = to 12
We're gonna do this like statement reason because I don't want to write a paragraph lol
2x-10=12 Given
2x=24 Simplify (+10 to each side cancels on left, adds on the right)
x=12 Simplify (divide by 2)
Yay!
Also if you have 2 chances maybe try -1? but I think 12 is right