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3x-5=5y ----------se reemplaza
x+5y=3
x+3x-5=3 ----------por esto
4x=8
x=2
2x+y=12
2(2)+y=12
4+y=12
y=8 x=2;y=8
x+5y=3 (-3)
3x-5y= 5
-3x -15y = -9
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// -20y = -4
y= -4/-20
y= 1/5
3x-5y= 5
3x-5 (1/5) = 5
3x -1 = 5
3x= 5+1
x= 6/3
x= 2
y= 1/5
x= 2
》
x-3y=-1 (-2)
2x+y=12
-2x +6y = 2
2x + y = 12
---------------
// 7y= 14
y= 14/7
y= 2
x-3y= -1
x-3 (2)= -1
x -6 = -1
x= -1+6
x= 5
y= 2
x=5