Chapter 1.5, Problem 12P

Find each sum.

$-15+17$

To determine

To Find: The sum $-15+17$

Answer to Problem 12P

The sum of $-15+17$ is $2$

Explanation of Solution

Given information:

The sum $-15+17$

Concept and Formula Used:

Properties of number.

To add two numbers with opposite sign subtract the lesser one from the greater one.

The sum has sign of the number with greater value.

Calculation:

The given sum is

  $-15+17$

As both the numbers are of different sign. Number 17 is greater than 15 therefore subtract 15 from 17 and put the sign of 17 to the result i.e. positive.

  $-15+17=2$

Conclusion:

The sum of $-15+17$ is $2$