Respuesta:
2 x + y = 4
x - y = 2
x = 2
hallando " y"
2 ( 2) + y = 4
4 + y = 4
y = 4-4
y = 0
Comprobación :
2( 2 ) + 0 = 4
4 + 0 = 4
4 = 4
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Respuesta:
2 x + y = 4
x - y = 2
x = 2
hallando " y"
2 x + y = 4
2 ( 2) + y = 4
4 + y = 4
y = 4-4
y = 0
Comprobación :
2 x + y = 4
2( 2 ) + 0 = 4
4 + 0 = 4
4 = 4