Almost 17 out of every 19 people who work on this problem
will call the unknown number ' x '.
If I may, since this particular solution is all mine, I'd like to call
the unknown number ' G '.
The number = G
12 added to the number = G + 12
3 times the number = 3G
32 less than 3 times the number = 3G - 32
You said that G + 12 = 3G - 32
Subtract G from each side: 12 = 2G - 32
Add 32 to each side: 44 = 2G
Divide each side by 2 : 22 = G