-12-(-34)

To solve the expression \(-12 - (-34)\), you can simplify it by recognizing that subtracting a negative number is the same as adding the positive version of that number.

So, the expression can be rewritten as:

\[ -12 + 34 \]

Now, perform the addition:

\[ -12 + 34 = 22 \]

Therefore, \(-12 - (-34) = 22\).