Understand Operation: Understand the operation required. We need to subtract 6 from −7, which is the same as adding −7 and −6 together.
Predict Result Sign: Predict the sign of the result. Since we are adding two negative numbers, the result will also be negative.
Perform Addition: Perform the addition of the two negative numbers. −7+(−6) equals −13.
Verify Result: Verify the result. Adding two negative numbers should give a larger negative number, which in this case is −13, so the calculation seems correct.