math

posted by Marcus

I don't know what to do.

Hosni fave the following argument that -(a+b)= -a+-b, for all intergers a and b. If the arqument is correct, suppy the missing reasons. If it is in correct explain why not.
-(a+b)=(-1)(a+b)
=(-1)a+(-1)b
=-a+-b

  1. Marth

    You have correctly shown that the distributive property distributes the negative.

  2. marcus

    If the argment is correct supply the missing reasons. what is the reason? I don't know.

  3. Marth

    The distributive property distributes the negative to both a and b.

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