To visualize the addition of \( +(-1) \) using a number line, you can follow these steps:
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Start at Zero: Locate the point at zero on the number line.
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Move Left: Since you are adding a negative number (-1), you will move to the left on the number line. Moving left represents subtracting.
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Count the Steps: Move one unit to the left from zero.
This brings you to the point \(-1\) on the number line.
Therefore, \(0 + (-1) = -1\).