Understand Operation: Understand the operation required. We need to subtract 10 from −8, which is the same as adding −8 and −10 together.
Predict Result Sign: Predict the sign of the result. Since both numbers are negative, the result will also be negative.
Perform Addition: Perform the addition of the two negative numbers. −8+(−10) equals −18.
Verify Calculation: Verify the calculation. Adding two negative numbers increases the absolute value, so the result should be a larger negative number, which is correct in this case.