whats the elimination process

http://www.cymath.com/answer.php?q=5x%2B2y%3D-1%3B3x%2B7y%3D11%3Aelimination

1-5x+2y=-1 (x-7) >-35x-14y=7

2-3x+7y=11 (x2) >6x+14y=22

                             41x     = 29

                                 x      = 1.4

sub x = 1.4 into equation 1

5(1.4) + 2y = -1

7 + 2y = -1

2y = -1 -7

2y = -8

y = -4                                final answer

                                               (1.4,-4)