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March 29, 2017

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Hi, how can I solve this equation using algebra? y= 9x+50, many thanks

  • algebra - ,

    If you want an equation for x in terms of y, subtract 50 from both sides and then divide both sides by 9.

    That is not reaaly "solving" for x; you are just rearranging an equation. To get a numerical value for x (and y), you need a second independent equation.

  • algebra - ,

    ok thanks, I also have to solve y=9x+100 as part of the question, is this what you meant by a second independent equation?

  • algebra - ,

    Hirxbo

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