Chapter 14.CM, Problem 1CM

To determine

To find:

The difference between two numbers.

Answer to Problem 1CM

Solution:

The difference between two numbers is $-7$.

Explanation of Solution

If the minuend is less than the subtrahend, then reverse the entire expression keeping the minus sign out of the parentheses and carry out the subtraction.

Calculation:

Given:

The expression:

$8-15$

Reversing the expression:

$-\left(15-8\right)$

Subtracting $8$ from $15$ and opening the parentheses:

$\begin{array}{l}-\left(7\right)\\ =-7\end{array}$

Conclusion:

Thus, the difference between two numbers is $-7$.