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

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