-10 - (-8) + (-4) - 20
When subtracting a negative, you add the number.
When adding a negative, you subtract the number.
-10 + 8 - 4 - 20
Do addition and subtraction from left to right.
When adding a negative to a positive, keep the sign of the larger number.
When subtracting from a negative, you add the numbers together and keep the negative sign.
-10 + 8 - 4 - 20
-10 + 8 = -2
-2 - 4 = -6
-6 - 20 = -26