Algebra

Solving for the sytems of equiation using the elimination method.

Book gives answers 3,2. I have tried using all the numbers to solve for x and y.

I do get the 3,2. Don't know if this is another error in the book.

8x-4y=16
4x+5y=22

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asked by G
  1. leave the first equation, but multiply the second by 2

    8x-4y=16
    8x+10y=44 , now subtract them

    -14y = -28
    y=2

    back into the first

    8x - 8 = 16
    8x = 24
    x=3

    so x=3, y=2 like the textbook had

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    posted by Reiny

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