+7-(+12)

To simplify the expression +7-(+12), you can remove the parentheses. And since the positive sign in front of the 12 indicates that it is already positive, you can simply change the operation to subtraction:

+7 - +12

Now, subtract 12 from 7:

7 - 12 = -5

Therefore, +7 - (+12) simplifies to -5.