21-02-2017
Mathematics

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Why can you use addition to check your substraction

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derpysnailcat derpysnailcat

21-02-2017

If you do 7-5 then you get 2. You can check by adding 2+5 to get 7. You do this because this is how you check your work .

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21-02-2017

They are both the inverse of each other, same as multiplying and dividing.

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