Question

How do you add 2x + -5x?

Answer 1

`(2x) + (-5x) = color(green)( -3x`

Explanation:

The variable `x` is common to both the terms. So taking the common factor out, we get:

`(2x) + (-5x) = x*{2+(-5)}`

`= x*{2-5}`

`= x*(-3)`

`=color(green)( -3x`