Decide Whether or Not the Equations Are Equivalent $\begin{array} { l } 3 x - 1 = 7 \\- 3 x + 7 = - 1\end{array}$

Decide whether or not the equations are equivalent.
- $\begin{array} { l } 3 x - 1 = 7 \\- 3 x + 7 = - 1\end{array}$

A) Not equivalent
B) Equivalent