c) 2 x + 3 y - 5 z = 14 d) 3 x + 25/144 = 2 y - - Dicamon

Question

c)  2 x + 3 y - 5 z = 14 d)  3 x + 25/144 = 2 y - 169/25 = z + 144/169  ra  3 x + 2 y + z = 169 vá  6 x - 3 z/5 = 4 y - 6 x/7 = 3 z - 4 y/9

Answer

. 9 x + 25/144 = 2 y/25 = z + 144/169 = 3 x + 25 + 2 y + 169 + 2 + 144/144 + 25 + 16 y  = ( 3 x + 2 y + z  ) + 0/338 = 169/338 = 1/2 ⇒ .  3 x + 25 = 72   2 y - 169  .   z + 25/2

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