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

For this case we have:

Given , we want to find an expression equivalent to .

Let the equation be:

Subtract -2b on both sides of the equation:

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

Thus, an expression equivalent to is .

-2b

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°