- Analyze the expression \(-43 - (-43)\).
- Apply the rule that subtracting a negative number is the same as adding a positive one: \(-43 - (-43) = -43 + 43\).
- Use the additive inverse property to find the sum of \(-43\) and \(43\), which is \(0\).
- Final result: \(\boxed{0}\).
Explanation
- Problem Analysis
The expression provided is \(-43 - (-43)\). This is an arithmetic operation involving negative integers. Our objective is to simplify this expression by applying fundamental algebraic rules.
- Applying the Rule of Subtraction
When subtracting a negative number, we use the rule that subtracting a negative value is equivalent to adding its positive counterpart. Formally, for any real numbers \(a\) and \(b\), the property is \(a - (-b) = a + b\). In our specific case, where \(a = -43\) and \(b = 43\), this simplifies the expression to \(-43 + 43\).
- Calculation and Final Result
Next, we combine the values \(-43\) and \(43\). According to the property of additive inverses, any number added to its opposite (or additive inverse) results in zero: \(-x + x = 0\). Therefore, \(-43 + 43 = 0\). The final simplified value is \(\boxed{0}\).
Examples
In daily life, this concept is similar to managing a bank balance. If you have a debt of \(\$43\) (represented as \(-43\)) and you are forgiven that debt (subtracting a negative amount), you are effectively gaining that money back. In this scenario, your financial standing changes from \(-43\) by subtracting \(-43\), resulting in \(-43 - (-43) = 0\), meaning you are back to a zero balance. Understanding these operations helps in managing debts, credits, and tracking changes in various quantitative values.