1.) 2x + y = 3
2.) x - 2y = -1
If equation 1 is multiplied by 2 and then the equations are added, the result is
3x = 2
3x = 5
5x = 5

ANSWERS

2015-11-01 17:51:19

5x=5 if it was any other solution, the equation woluld not make sense.

ADD ANSWER