Understand the problem: Understand the problem. We need to evaluate the expression 1−(−3)−5. This involves subtracting a negative number and another subtraction.
Subtracting a negative number: Subtracting a negative number is the same as adding its positive counterpart. So, 1−(−3) becomes 1+3.
Perform addition: Perform the addition from Step 2. 1+3 equals 4.
Subtract from result: Now subtract 5 from the result of Step 3. So, 4−5 equals −1.
Check for errors: Check the result for any mathematical errors. The calculations are correct, and there are no errors.