### Home > CA > Chapter Ch12 > Lesson 12.4.1 > Problem 12-66

12-66.

Aura thinks the solution to the systems of equations below is (−2, 4) while Edison thinks the solution is (2, −2). Teresito thinks they are both wrong. Who is correct? **Justify** your answer. Homework Help ✎

3*x* + 2*y* = 2

5*x* − 12 = *y*

Use substitution to solve the system.

3*x* + 2(5*x* + 12) = 2

Solve for *x*.

Use your solution for *x* to solve for *y*.

Substitute the points into both equations to check your solutions.