10 − (−10) + 8 − 12

10 - (-10) means adding 10 to -10, which gives us 20.

So the expression becomes:

20 + 8 - 12

Simplifying further, we can add 20 and 8 first:

28 - 12

Which equals:

16

To solve the expression 10 - (-10) + 8 - 12 step by step, follow these steps:

Step 1: Deal with the negative sign inside the parentheses first.
10 - (-10) = 10 + 10 = 20

Step 2: Next, add up the remaining terms.
20 + 8 - 12 = 28 - 12 = 16

So, the result of the expression 10 - (-10) + 8 - 12 is 16.