Question

What is a simplified expression for (x+y)−(x+y)?

Answer 1

Answer:

Simplified expression for (x+y)- (x+y)

I think it should be (x+y) -(x-y) as above expression gives 0

So, x+y - (x-y)

=x+y -x +y

Making subsets of positive and negative sign terms

= x+y +y - (x)

=x+2y - x

= x- x +2y

=2y

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