24-03-2015
Mathematics

Answered

solve simultaneous equation

2x + 4y = 1

3x-5y=7

Answer :

Panoyin Panoyin

24-03-2015

2x + 4y = 1 ⇒ 6x + 12y = 3
3x - 5y = 7 ⇒ 6x - 10y = 14
       22y = 17
      22   22
   y = 17/22
   2x + 4(17/22) = 1
      2x + 3 1/11 = 1
   -3 1/11 -3 1/11
      2x = -2 1/11
   2 2
      x = -1 1/22
         (x y) = (-1 1/22, 17/22)

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