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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 . . . . . . . - PowerPoint PPT Presentation
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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 . . . . . .
a – 4b – 4c = 3 . . . . . . 2a + 9b + c = 13 . . . . . .
-a + 3b + 2c = 1 . . . . . .
a – 4b – 4c = 3 –a + 3b + 2c = 1 + –b – 2c = 4 . . . . . .
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
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 . . . . . .
–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
a – 4b – 4c = 3
a – 4 . 2 – 4.(–3) = 3
a = –1
Jadi: a = –1 , b = 2 , c = –3
