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14-09-2015
Mathematics

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solve the system by elimination {3×+2y=17
4×-2y=4}

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Panoyin Panoyin

14-09-2015

3x + 2y = 17
4x - 2y =   4
        7x = 21
   7 7
        x = 3
3(3) + 2y = 17
    9 + 2y = 17
- 9    - 9
      2y = 8
   2    2
      y = 4
      (x, y) = (3, 4)

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