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How do you evaluate #x-(-y)# where x=-2 and y=5?

Answer 1

Eva Abramson

Substitute #color(red)(-2)# for #x# and Substitute #color(blue)(5)# for #y# and calculate. See process below:

#color(red)(x) - (-color(blue)(y))# becomes:

#color(red)(-2) - (-color(blue)(5))#

Because in addition and subtract minus a negative number becomes a plus, we can rewrite as:

#color(red)(-2) + color(blue)(5)#

#3#

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Answer 2

Jace Anderson

You evaluate ( x-(-y) ) as follows: [ x - (-y) = x + y ] Given that ( x = -2 ) and ( y = 5 ), substitute these values into the expression: [ (-2) + 5 = 3 ]

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.