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lightmoon lightmoon

11-03-2015
Mathematics

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Please answer quickly

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Panoyin Panoyin · Answer 1 · 2015-03-12T02:11:56+01:00

1. C. there is no solution
2. B. inconsistent
3. 6x + 6y = -6   ⇒ 30x + 30y = -30
    5x + 1y = -13 ⇒ 30x + 6y = -78
       24y = 48
      24    24
   y = 2
   6x + 6(2) = -6
   6x + 12 = -6
      -12 -12
       6x = -18
      6      6
   x = -3
   (x, y) = (-3,2)