SOLUTION: -6x + 7y = -47 15x - 13y = 122 =========== = Multiply the 1st eqn by 5 and the 2nd by 2, then add them.

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: -6x + 7y = -47 15x - 13y = 122 =========== = Multiply the 1st eqn by 5 and the 2nd by 2, then add them.      Log On