It means: 2 times 6 = 12
Do you mean 2 x (-3)? If that's what you mean, it's 6, positive.
It means six squared, or 6 times 6. 6 is used as a factor twice. The value is 36.
If you mean 14=2m+2... then m=6
2x+6
2m + 6
6 x 2
Take twice a day, naturally.
It is an algebraic expression in the form of 2x+6 whereas x is the unknown variable
12
2x-6
twice a number means a number times 2
18 and 6