isa01
isa01
21-02-2017
Mathematics
contestada
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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tyana3
tyana3
21-02-2017
They are both the inverse of each other, same as multiplying and dividing.
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