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SPL 3 VARIABEL

SPL 3 VARIABEL. a – 4b – 4c = 3 2a + 9b + c = 13 -a + 3b + 2c = 1. a – 4b – 4c = 3 2a + 9b + c = 13 -a + 3b + 2c = 1. Pilih satu variabel yg akan di-eliminasi. Contoh: ambil “a”. a – 4b – 4c = 3 . . . . . .  2a + 9b + c = 13 . . . . . .  -a + 3b + 2c = 1 . . . . . . .

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SPL 3 VARIABEL

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  1. SPL 3 VARIABEL

  2. a – 4b – 4c = 3 2a + 9b + c = 13 -a + 3b + 2c = 1

  3. a – 4b – 4c = 3 2a + 9b + c = 13 -a + 3b + 2c = 1 Pilih satu variabel yg akan di-eliminasi Contoh: ambil “a”

  4. a – 4b – 4c = 3 . . . . . .  2a + 9b + c = 13 . . . . . .  -a + 3b + 2c = 1 . . . . . . 

  5. a – 4b – 4c = 3 . . . . . .  2a + 9b + c = 13 . . . . . .  -a + 3b + 2c = 1 . . . . . .    a – 4b – 4c = 3   –a + 3b + 2c = 1 + –b – 2c = 4 . . . . . . 

  6.  a – 4b – 4c = 3 . . . . . .  2a + 9b + c = 13 . . . . . .  -a + 3b + 2c = 1 . . . . . .    2a + 9b + c = 13  x 2  –2a + 6b + 4c = 2 + 15b + 5c = 15

  7.  a – 4b – 4c = 3 . . . . . .  2a + 9b + c = 13 . . . . . .  -a + 3b + 2c = 1 . . . . . .    2a + 9b + c = 13  x 2  –2a + 6b + 4c = 2 + 15b + 5c = 15 bagi 5 3b + c = 3 . . . . . . 

  8. –b – 2c = 4 –b – 2c = 4 3b + c = 3 x 2  6b + 2c = 6 + 5b = 10 b = 2 3b + c = 3 3.2 + c = 3  c = –3

  9.  a – 4b – 4c = 3 a – 4 . 2 – 4.(–3) = 3 a = –1 Jadi: a = –1 , b = 2 , c = –3

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