dathanmorris dathanmorris

04-03-2015
Mathematics

Answered

Solve by substitution
4x=y-1
6x-2y=-3

Answer :

Panoyin Panoyin

08-03-2015

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

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