9514 1404 393
Answer:
(x, y) = (1, -1)
Step-by-step explanation:
The augmented matrix of coefficients for these equations is ...
[tex]\left[\begin{array}{cc|c}2&-5&7\\-2&4&-6\end{array}\right][/tex]
The row-reduction function of your calculator can find the solution to the system of equations. The result of using that function is ...
[tex]\left[\begin{array}{cc|c}1&0&1\\0&1&-1\end{array}\right][/tex]
This tells you the solution is (x, y) = (1, -1).
