7 -3 = 7 + -3.....what property is that?

Question

anonymous · Answer

you change the subtraction operation to addition............usually thats inverse property.........but it might be closure property.....how can you distinguish

anonymous · Answer

please help

directrix · Answer

Let's take a look at some properties and see what we can figure out. Open the attachment.

anonymous · Answer

ok...thx

directrix · Answer

I did not see anything there. Is the operation of subtraction defined in your book?

anonymous · Answer

but i dont see the property of my question

anonymous · Answer

no....not really
they said to put a propery

directrix · Answer

7 -3 = 7 + -3 --> I don't know a named property for that. 7 minus 3 is, by definition of subtration, 7 + (-3). [Change the sign of the second number and add it to the first:  7 -3 = 7 - (+3) = 7 - 3. Sorry to be of no help.