Find each sum or difference. -15+6

검증된 단계별 안내

Identify the operation: The problem asks to find the sum or difference of -15 and 6, which means we are adding a negative number and a positive number.

Rewrite the expression clearly: \(-15 + 6\).

Understand that adding a positive number to a negative number is equivalent to subtracting the smaller absolute value from the larger absolute value and keeping the sign of the number with the larger absolute value.

Compare the absolute values: \(| -15 | = 15\) and \(| 6 | = 6\). Since 15 is greater, the result will have the sign of -15, which is negative.

Subtract the smaller absolute value from the larger absolute value: \(15 - 6\) and then apply the negative sign to get the final expression.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Integer Addition and Subtraction

This concept involves combining positive and negative whole numbers. Adding a positive number increases the value, while adding a negative number decreases it. Understanding how to handle signs is essential for correctly computing sums and differences.

Number Line Visualization

Using a number line helps visualize addition and subtraction of integers. Moving right represents adding positive numbers, and moving left represents adding negative numbers or subtracting. This aids in understanding the direction and magnitude of changes.

Simplifying Expressions

Simplifying involves performing arithmetic operations to reduce an expression to a single value. For sums and differences, this means combining like terms and calculating the final result accurately.