payshencec21
payshencec21
16-03-2018
Mathematics
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Respuesta :
vunderkid
vunderkid
16-03-2018
{3x-4y=9
+
{-3x+2y=9
-2y=18
y=-9
3x+36=9
3x=-27
x=-9
B (-9;-9)
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