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I need some math help

Posted by on Jan. 8, 2014 at 12:19 AM
  • 2 Replies


 trying to help my daughter  in Math and I'm stuck and math is not my good subject .


  the math problems are   y= 7x+12

                                               y=3x-8


  y=2x-11

 y=x-8


 




by on Jan. 8, 2014 at 12:19 AM
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Replies (1-2):
lorrain
by Member on Jan. 8, 2014 at 10:36 AM

go to khan academy.org find basic algebra. both of you can look at it.  totally free.

Hannahluvsdogs
by Silver Member on Jan. 8, 2014 at 8:15 PM

Those are easy. Since they're both equal to y you can set them equal to each other. So 7x+12=3x-8. Then solve for x, and put that in place of x in one of the equations to solve for y.

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