5x - 2y = 11 2x + 5y = 7 2x + y = 4 X - y = 2
Matematika
amon680
Pertanyaan
5x - 2y = 11
2x + 5y = 7
2x + y = 4
X - y = 2
2x + 5y = 7
2x + y = 4
X - y = 2
1 Jawaban
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1. Jawaban BSunShine
Materi : SPLDV
Bagian Pertama [][]
5x - 2y = 11 ..... ×2
2x + 5y = 7 ...... ×5
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10x - 4y = 22
10x + 25y = 25
◆◆◆◆◆◆◆◆◆◆◆◆[-]
-29y = -3
y = 3/29
5x - 2y = 11
5x - 2(3/29) = 11
5x = 11 + 6/29
5x = 319/29 + 6/29
5x = 325/29
145x = 325
x = 325/145
x = 65/29
Hp = { 65/29 , 3/29 }
Kedua [][]
2x + y = 4
x - y = 2
◆◆◆◆◆◆◆◆ [+]
3x = 6
x = 2
x - y = 2
2 - y = 2
-y = 2 - 2
y = 0
Hp = { 2 , 0 }