SPL 3 VARIABEL
a – 4b – 4c = 3 2a + 9b + c = 13 -a + 3b + 2c = 1
Pilih satu variabel yg akan di-eliminasi 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 . . . . . .
2a + 9b + c = 13 x 2 –2a + 6b + 4c = 2 +
2a + 9b + c = 13 x 2 –2a + 6b + 4c = 2 + bagi 5 3b + c = 3 . . . . . .
–b – 2c = 4 –b – 2c = 4 3b + c = 3 x 2 6b + 2c = 6 + 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