Question

What is the missing reason in the proof?
Prove –(–y – x) – x = y
Statements Reasons
–(y –x) – x = y + x – x Opposite of a sum property
y + x – x = y + x + (–x) ________________________
y + x + (–x) = y + [x + (–x)] Associative Property of Addition
y + [x + (–x)] = y + 0 Additive Inverse Property
y + 0 = y Additive Identity Property


A.
Definition of Subtraction

B.
Additive Inverse Property

C.
Additive Identity Property

D.
Opposite of a Sum Property

Answer 1

@NathaliaMA13

Answer 2

look at what they are doing... what changes? what i sthe justification for this?

Answer 3

Is it D?.....

Answer 4

@pgpilot326 ?

Answer 5

Help please?

Answer 6

Yes, it is D.

Answer 7

Thank you!

Answer 8

:)

Answer 9

I guess I got here too late..But, I'm happy you got it. @YoungStudier