tolomg bantu..beserta caranya trimakasi

9). 1/2x+3/4q=-6 |x2| p+3/2q=-12
p-3/2q=6 |x1| p-3/2q=6
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3q=-18 => q=-6
#substitusi q=-6
p-3/2q=6
p-3/2.-6=6
p+9=6
p=6-9=-3