hasil dari 5x-2y=2 3x+4y=8
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hasil dari 5x-2y=2 3x+4y=8
1 Jawaban
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1. Jawaban ruthstephanis
5x - 2y = 2 (×2) 10x - 4y = 4
3x + 4y = 8 (×1) 3x + 4y = 8
_________________________ +
13x = 12
x = 12/13
5x - 2y = 2
5(12/13) -2y = 2
60/13 - 2y = 2
-2y = 2 - 60/13
-2y = 2 - 4 8/13
-2y = -2 8/13
-2y = -34/13
y = -34/13 : (-2)
y = -34/13 × (-1/2)
y = 34/26
y = 1 8/26
y = 1 4/13