Jawaban:
Penyelesaian menggunakan SPLDV
metode Eliminasi dan subtitusi
Eliminasi variabel x
8x - 5y = 18
3x + 4y = -5
dicari faktor yang sama
= 24x -15y = 54
24x 32y = -40 _
-47y = 94
y = 94/-47
y = -2
Subtitusi y= -2 ke persamaan 1
8x -5y = 18
8x -5×( -2 ) = 18
8x 10 = 18
8x = 18 - 10
8x = 8
x = 8/8
x = 1
x - 2y
= 1 -2 × (-2)
= 1 + 4
= 5
Maka, hasil dari x - 2y = 5
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Jawaban:
Penyelesaian menggunakan SPLDV
metode Eliminasi dan subtitusi
Eliminasi variabel x
8x - 5y = 18
3x + 4y = -5
dicari faktor yang sama
= 24x -15y = 54
24x 32y = -40 _
-47y = 94
y = 94/-47
y = -2
Subtitusi y= -2 ke persamaan 1
8x -5y = 18
8x -5×( -2 ) = 18
8x 10 = 18
8x = 18 - 10
8x = 8
x = 8/8
x = 1
x - 2y
= 1 -2 × (-2)
= 1 + 4
= 5
Maka, hasil dari x - 2y = 5