Answer:
-36
Explanation:
-78 - (-42)
= -78 + 42
= -36
36 units
to find the distance take the absolute value of the difference, that is
| - 42 - (- 78) | = | - 42 + 78 | = | 36 | = 36
or
| - 78 - (- 42) | = | - 78 + 42 | = | - 36 | = 36
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