The equations are

                    Equation (1)

                  Equation (2)

Multiply the first equation by 2 and the second equation by 3.

Then subtract the equations to eliminate the c variable.

   (Subtract the corresponding columns)

Apply division property of equality: if a = b, then.

                (Divide each side by negative 32)

                         (Cancel common terms)

                              (Divide: )

Substitute in equation (2).

                 (Multiply: )

Apply addition property of equality; if a = b, then a + c = b + c.

(Add 18 to each side)

           (Apply Additive inverse property: )

                 (Apply Additive identity property: )

                         (Add: )

Apply division property of equality: if a = b, then.

                    (Divide each side by 2)

                         (Cancel common terms)

                             (Divide: )

The solution is

The solution is .