Question

How can x + 8 = -x + 7 be setup as a system of equations?

Answer 1

\(\large {
x + 8 = -x + 7 \implies
\begin{cases}
{\color{blue}{ y}}=x+8\\
{\color{blue}{ y}}=-x+7
\end{cases}\qquad {\color{blue}{ y}}={\color{blue}{ y}}
}\)

Answer 2

think about this.... if x+8 is equal to -x+7
if both expressions were equal to another same variable then wouldnt the two equations be the equal itself?

Answer 3

i was afk lol
technically what @jdoe0001 said