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Subtracting $7 - 5-7 - (-5)$
Apply the take-away model of subtraction to a new pair of same-sign problems:
- **$7 - 5 = 2{7}positives and take away{5}positives. Two positives remain, giving a result of{2}$.
- : Start with.
As with the earlier $5 - 3-5 - (-3)$ examples, the structure is the same in both cases: remove counters of the same color from a larger collection of that color. The answer carries the sign of the counters that are left.
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Subtracting $5 - 3-5 - (-3)$ with Counters
Subtracting $7 - 5-7 - (-5)$
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Learn After
A logistics coordinator uses negative counters to represent pending export containers in a shipping yard. If there are 7 pending containers (represented as -7) and 5 of those containers are removed from the pending list (subtracting -5) after they are loaded onto a ship, what is the resulting value of pending containers according to the take-away model?
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