Explain how to use a number line to find the opposites of the intergers 3 units away from - 7

First, draw the number line, starting at - 10 and ending at 10. To find the integers 3 away from - 7, first subtract 3. [-7-3=-10]. Then add 3 to - 7. - 7+3=-4. The opposites of - 10 and - 4 are, respectively, 10 and 4