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12. Explain why is (+5) + (-7) = -2.
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12. Explain why is (+5) + (-7) = -2.

User Reps
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1 Answer

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Let's use a number line to help us visualize what's going on.

Starting at 0, +5 takes us 5 units to the right.

From there, -7 moves us 7 units back to the left and we end up at -2.

So (+5) + (-7) simplifies to -2.

Take a look at the image below.

12. Explain why is (+5) + (-7) = -2.-example-1
User Matthew Simoneau
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