joshclifford808
joshclifford808
29-03-2017
Mathematics
contestada
2y = 2x -8
2x + y = 5
Respuesta :
tuandbsk
tuandbsk
26-04-2017
2x+y=5 => y=5-2x.
So we have: 2(5-2x)=2x-8 <=> 10-4x=2x-8 <=> 6x=18 <=> x=3.
=> y=5-2.3=-1
In conclusion: (x;y)=(3;-1)
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