Perform the subtraction: 2 − 7 = − 5 .
Perform the subtraction: − 6 − 2 = − 8 .
The result of the first subtraction is -5.
The result of the second subtraction is -8. − 5 , − 8
Explanation
Understanding the problem We are asked to perform two subtraction operations. The first one is subtracting 7 from 2, and the second one is subtracting 2 from -6.
Calculating 2 - 7 To calculate 2 - 7, we start at 2 and move 7 units to the left on the number line. This gives us -5.
Calculating -6 - 2 To calculate -6 - 2, we start at -6 and move 2 units to the left on the number line. This gives us -8.
Final Answer Therefore, the results of the subtractions are -5 and -8, respectively.
Examples
Understanding subtraction is crucial in everyday life. For example, if you have $10 and spend $3, you subtract to find out how much money you have left ($10 - $3 = $7). Similarly, if the temperature is 25 degrees Celsius and it drops by 5 degrees, you subtract to find the new temperature (25 - 5 = 20 degrees Celsius). Subtraction helps us manage resources, understand changes, and solve problems involving differences.