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Kelas : VIII SMP
Bab : SPLDV
Pembahasan :
1/3x - 1/2y = 7/6 ——» 2x - 3y = 7
1/2x + 1/4y = -5/4 ——» 2x + y = -5
Eliminasi...
2x + y = -5
2x - 3y = 7
——————— (-)
4y = -12
y = -3
Substitusi...
2x + y = -5
2x - 3 = -5
2x = -2
x = -1
Hp : {x , y} = {-1 , -3}