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26-03-2015
Mathematics

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what is the easiest way to solve this equation algebraically

what is the easiest way to solve this equation algebraically class=

Respuesta :

Panoyin Panoyin

04-04-2015

2x + 1y = 4
2x + 3y = 9
      -2y = -5
   -2    -2
   y = 2.5
2x + 3(2.5) = 9
2x + 7.5 = 9
   - 7.5 - 7.5
   2x = 1.5
      2    2
   x = 0.75
   (x, y) = (0.75, 2.5)

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