April 2019 1 6 Report
Diketahui sistem persamaan linear tiga variabel berikut.
4x + 3y + z = a .... (1)
2x + 4y + 4z = a + 5b .... (2)
3x - y + 2z = a - 2 ..... (3)
Jika himpunan penyelesaian sistem persamaan tersebut adalah {( -5, 2, 1 )}, nilai a-b = ....

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