Question

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

Answer 1

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

Explanation:

`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`