Respuesta:
Ejercicio 1:
a) x = 2, y = 2
b) x = 1/2, y = 1/3
Ejercicio 2:
a) x = -1/4, y = 1/2
b) no tiene solución
Ejercicio 3:
a) x = 51/2, y = 29/2
b) x = 3, y = -1
Explicación paso a paso:
Método de reducción:
a) 2x + y = 6(x-2) -4x - 2y = - 12 y = 2
4x + 3y = 14 4x + 3y = 14 x = 2
b) 2x + 3y = 2(x3) 6x + 9y = 6 21y = 7
-6y + 12y = 1 -6x + 12y = 1
y = 1/3 x = 1/2
a) 4x + 6y = 2(x3) 12x + 18y = 6 8y = 4
6x + 5y = 1(x-2) -12x - 10y = -2
y = 1/2 x = -1/4
b) 5x - 4y = 3(x2) 10x - 8y = 6
-10x + 8y = -6 -10x + 8y = -6
X = 3 y = 3
a) -2x + 4y = 7(x3) -6x + 12y = 21 2y = 29
3x - 5y = 4(x2) 6x - 10y = 8
y = 29/2 x = 51/2
b) x + 2y = 1(x3) 3x + 6y = 3 7y = -7
-3x + y = -10 -3x + y = -10
y = -1 x = 3
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Verified answer
Respuesta:
Ejercicio 1:
a) x = 2, y = 2
b) x = 1/2, y = 1/3
Ejercicio 2:
a) x = -1/4, y = 1/2
b) no tiene solución
Ejercicio 3:
a) x = 51/2, y = 29/2
b) x = 3, y = -1
Explicación paso a paso:
Método de reducción:
Ejercicio 1:
a) 2x + y = 6(x-2) -4x - 2y = - 12 y = 2
4x + 3y = 14 4x + 3y = 14 x = 2
b) 2x + 3y = 2(x3) 6x + 9y = 6 21y = 7
-6y + 12y = 1 -6x + 12y = 1
y = 1/3 x = 1/2
Ejercicio 2:
a) 4x + 6y = 2(x3) 12x + 18y = 6 8y = 4
6x + 5y = 1(x-2) -12x - 10y = -2
y = 1/2 x = -1/4
b) 5x - 4y = 3(x2) 10x - 8y = 6
-10x + 8y = -6 -10x + 8y = -6
X = 3 y = 3
Ejercicio 3:
a) -2x + 4y = 7(x3) -6x + 12y = 21 2y = 29
3x - 5y = 4(x2) 6x - 10y = 8
y = 29/2 x = 51/2
b) x + 2y = 1(x3) 3x + 6y = 3 7y = -7
-3x + y = -10 -3x + y = -10
y = -1 x = 3