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anonymous

  • 5 years ago

solve for x and y 2x-9y=-23 8x-5y=1

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  1. anonymous
    • 5 years ago
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    This looks like a great problem to do elimination in. Take your first equation and multiply it through by a constant which will allow you to vertically combine the two equations so that you are left with one variable. Once you've done that, you can plug in your answer to either of the two original equations to get the second variable's value. It looks like the x coefficients will be easy to cancel out. (Hint: the constant you multiply through is going to be negative.)

  2. anonymous
    • 5 years ago
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    x = 2, y= 3 use elimination method, multiply (1) by 4 and subtract from (2)

  3. anonymous
    • 5 years ago
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    multiply by negative 4?

  4. anonymous
    • 5 years ago
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    either multiply by 4 and subtract OR multiply by -4 and add them........

  5. anonymous
    • 5 years ago
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    oh ok thanks thats what i was confused about silly me

  6. bahrom7893
    • 5 years ago
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    or just solve the first equation for x in terms of y, and plug it in into the second equation

  7. anonymous
    • 5 years ago
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    it would be more complex........

  8. anonymous
    • 5 years ago
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    yea I got it now thanks

  9. anonymous
    • 5 years ago
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    you welcome.........

  10. bahrom7893
    • 5 years ago
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    lol I dunno, im just used to that..I learnt it that way see, gets more confusing for me, but whichever way is comfortable and wolf, u should fan sudhanshu_kmr

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spraguer (Moderator)
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