This problem is a checkpoint for solving linear systems in two variables.  It will be referred to as Checkpoint 2B.  

Solve the system of linear equations below.

$\left. \begin{array} { l } { 5 x - 4 y = 7 } \\ { 2 y + 6 x = 22 } \end{array} \right.$

Check your answers by referring to the Checkpoint 2B materials located at the back of your book.

Ideally, at this point you are comfortable working with these types of problems and can solve them correctly.  If you feel that you need more confidence when solving these types of problems, then review the Checkpoint 2B materials and try the practice problems provided.  From this point on, you will be expected to do problems like these correctly and with confidence.