The given expression is:

$20 - (-3) + (-49)$

To simplify this:

1. Subtracting a negative number is the same as adding its positive value: $20 - (-3) = 20 + 3 = 23$

2. Now, add $-49$: $23 + (-49) = 23 - 49 = -26$

So, the final result is:

$20 - (-3) + (-49) = -26$

Would you like more details or have any questions?

Here are 5 related questions:

1. What is the result of $15 - (-8) + (-30)$?
2. Simplify $100 + (-50) - (-25)$.
3. How do you simplify expressions with multiple negative signs?
4. Solve $12 - 3 - (-5)$.
5. What is the value of $0 - (-10) + (-5)$?

Tip: When you see a negative sign in front of parentheses, it means you're subtracting everything inside those parentheses!