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Posted by on Tuesday, December 21, 2010 at 9:22pm.

I have no idea how to solve this problem. Can someone help me???

3x+3y=-6(this is a negative 6)
7x+4y= 1

  • 8th grade math - , Tuesday, December 21, 2010 at 10:30pm

    3x+3y=-6
    3y=-6-3x Divide with 3
    y=-2-x

    7x+4y=1
    7x+4*(-2-x)=1
    7x-8-4x=1
    3x-8=1
    3x=1+8
    3x=9 Divide with 3
    x=9/3
    x=3

    y=-2-x
    y=-2-3
    y=-5

    x=3 y=-5

    Cheking of results:
    3x+3y=3*3+3*(-5)=9-15=-6

    7x+4y=7*3+4*(-5)=21-20=1

  • 8th grade math - , Sunday, May 17, 2015 at 5:39pm

    which is a table of value for y=x-12

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