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Kode Mapel : 2Kode : 8. 2. 3
Mapel : Matematika
Bab : Bab III
Kategori : Persamaan Garis
Kelas : SMP / MTs kelas VIII
Semester : Ganjil
Pembahasan:
Eliminasi:
x - 3y = 7 |2| 2x - 6y = 14
2x + y = -7 |1| 2x + y = -7 -
-7y = 21
y = -3
Susbtitusi:
x - 3y = 7
x - 3(-3) = 7
x + 9 = 7
x = -2
Maka nilai:
p + q = -3 - 2
= -5
Grafik terlampir.