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Kelas:8Mapel: Matematika
Kategori: Operasi Aljabar
Kata kunci: aljabar
Kode: 8.2.1 (Kelas 8 Matematika-Operasi Aljabar)
x=1-y
xy=1
(1-y)y=1
1-y²=1
y²=1-1
y²=0
y=0
x=1-y
x=1-0
x=1
pasangan x dan y yang memenuhi (1,0)
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