Compute.
$8-9-1+12-1$

The value of the expression 8 − 9 − 1 + 12 − 1 is 9 . We calculated it step by step: first, we performed the subtractions in order, followed by an addition, and finished with another subtraction.
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Answered by Anonymous | 2025-07-04

Perform the first subtraction: 8 − 9 = − 1 .
Perform the second subtraction: − 1 − 1 = − 2 .
Perform the addition: − 2 + 12 = 10 .
Perform the final subtraction: 10 − 1 = 9 . The final result is 9 ​ .

Explanation

Understanding the Problem We are asked to compute the value of the expression 8 − 9 − 1 + 12 − 1 . This involves a series of additions and subtractions. We will perform the operations from left to right.

First Subtraction First, we perform the subtraction 8 − 9 , which gives us − 1 .

Second Subtraction Next, we subtract 1 from the result of the previous step: − 1 − 1 = − 2 .

Addition Now, we add 12 to the result of the previous step: − 2 + 12 = 10 .

Final Subtraction Finally, we subtract 1 from the result of the previous step: 10 − 1 = 9 .

Conclusion Therefore, the value of the expression 8 − 9 − 1 + 12 − 1 is 9 .


Examples
In everyday life, you might use this type of calculation when managing your finances. For example, imagine you start with $8 in your wallet, spend $9 on a snack, lose $1, find $12, and then spend another $1 on a drink. The calculation 8 − 9 − 1 + 12 − 1 = 9 tells you that you would have $9 left.

Answered by GinnyAnswer | 2025-07-04