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Posted by on Wednesday, January 6, 2010 at 5:52pm.

2x+5y=16
5x-2y=11

Please help me solve this system of equations!! I keep getting no solution and i do not know what I am doing wrong.

  • Math - , Wednesday, January 6, 2010 at 6:17pm

    If you don't even know what one of the variables are, you can't solve the equasion. There IS no solution.

  • Math - , Wednesday, January 6, 2010 at 6:18pm

    First you multiply the first equation by 5 and the second equation by -2.
    You get:
    10x+25 = 80
    -10x+4y = -22
    You cancel out the 10x. Therefore you add the two equations and you get
    29y=58
    y=2
    You plug in 2 for y in any one of the original equations and you get:
    x= 3

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