−68 − 21
-68 - 21 = -89.
To subtract -21 from -68, you can follow these steps:
Step 1: Write down the numbers: -68 and -21.
Step 2: Start by subtracting the absolute values of the two numbers. |-68| - |-21| = 68 - 21.
Step 3: Perform the subtraction: 68 - 21 = 47.
Step 4: Determine the sign of the result. Since the larger number (|-68|) is negative, the result will also be negative.
Step 5: The final answer is -47.
Therefore, -68 - 21 equals -47.