Question

Suppose a + b = 0. Which one of these expressions equals a-b?

Answer 1

There is no attached file to look at the choices. I’m looking forward to answer your question.

Answer 2

For this case we have:

Given $a + b = 0$, we want to find an expression equivalent to $a-b$.

Let the equation $a + b = 0$be:

Subtract -2b on both sides of the equation:

$a + b-2b = 0-2b$

Taking into account that different signs are subtracted and the sign of the major is placed:

$a-b = -2b$

Thus, an expression equivalent to$a-b$ is $-2b$.

Answer:

-2b