Add (−21) and (−11).
To add -21 and -11, you simply add the numbers together:
-21 + (-11) = -32
To add -21 and -11, follow these steps:
Step 1: Write down the numbers: -21 and -11.
Step 2: Add the two numbers together: -21 + (-11).
Step 3: To add two negative numbers, combine their absolute values and keep the negative sign. So, add the absolute values of 21 and 11, which gives you 32.
Step 4: Since both numbers are negative, the answer will be negative. So, the result is -32.
Therefore, -21 + -11 = -32.