titik potong garis 2x + 5y = 6 dan 3x + y = -4 adalah...
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titik potong garis 2x + 5y = 6 dan 3x + y = -4 adalah...
1 Jawaban
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1. Jawaban whongaliem
2x + 5y = 6 |kali 3| ⇒ 6x + 15y = 18
3x + y = - 4 |kali 2| ⇒ 6x + 2y = - 8
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13y = 26
y = 16/13
y = 2
2x + 5y = 6
2x + 5 (2) = 6
2x + 10 = 6
2x = 6 - 10
2x = - 4
x = - 4/2
x = - 2
ririk potong (- 2 , 2)