We can see that adding a negative number is the same as subtracting its positive counterpart. Below we will demonstrate this by finding 7 and moving 3 units to the left on the number line.
The resulting position, after moving to the left on the number line, is the sum.
7+(-3)=4
When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different.
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Same Sign & Different Signs
(+)(+)=(+) & (+)(-)=(-)
(-)(-)=(+) & (-)(+)=(-)In our case one number is positive and one number is negative, so the product will be negative.
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Let's perform the addition.
- 5+6=1
We can see that adding a positive number is the same as subtracting its negative counterpart. Below we will demonstrate this by finding - 5 and moving 6 units to the right on the number line.
The resulting position, after moving to the right on the number line, is the sum.
- 5+6=1
We can see that adding a negative number is the same as subtracting its positive counterpart. Below we will demonstrate this by finding - 2 and moving 2 units to the left on the number line.
The resulting position, after moving to the left on the number line, is the sum.
(- 2)+(-2)=- 4
