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  • Jul 5, 2012, 10:56 PM
    bruceblaze19
    math online study guide for 9th i grade algebra
    how can I solve x-y=9/10, 11/2(x+y = 1?
  • Jul 6, 2012, 10:03 AM
    Unknown008
    Make one of the variables the subject of formula in the first equation and substitute this into the second equation.

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