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3. Hallar el valor de y:
4x + 3y = 30
4x - 3y = 18
A) 5
B) 2
C) 9
D) 6
E) 12
3. Hallar el valor de y:
4x + 3y = 30
4x - 3y = 18
A) 5
B) 2
C) 9
D) 6
E) 12
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Respuesta:
es 6
Explicación paso a paso:
4x+3y= 30 +
4x-3y=18
8x=48
x= 6