Respuesta :

Emma1533
It is called inverse operations.
pmayl
Inverse operations are operations that undo each other. 
In this case, 10 + 2 = 12, and 12 - 2 = 10 
A multiplication example could be 4 x 2 = 8, and 8 ÷ 2 = 4

Answer is inverse operations. 

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good job