Answer
(a) The opposite of $x$ plus $y$.
(b) $x$ minus $y$.
(c) The opposite of $x$ minus $y$ plus $z$.
Work Step by Step
An algebraic expression like $-x - z$ can be put into words as "the opposite of $x$ minus $z$" since the opposite of $x$ is $-x$. By translating all of the given equations in this way, the answers can be found.
