Sistem persamaan linear dua variabel dengan metode substitusi....
x + y = -5
x - 2y = 5
x + y = -5
x - 2y = 5
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Mapel : MatematikaKelas : VIII SMP
Bab : SPLDV
Pembahasan :
x + y = -5
x - 2y = 5
——————— (-)
3y = -10
y = -10/3
Substitusi...
x + y = -5
x - 10/3 = -5
x = -5 + 10/3
x = -15/3 + 10/3
x = -5/3
Hp : {-5/3 , -10/3}