Question

Si; a*b = a+4b-3ab; halla el valor de x en:
x*2=3

Answer 1

Respuesta:

1/2(x)+3y = 3

(1/3)x+2y = - 2

Método de Igualación :

1 ) Se despeja a " x " en la ecuación " 1/3(x)+2y = - 2 " :

1/3(x)+2y = - 2

1/3(x)+2y-2y = - 2-2y

(1/3)x = - 2-2y

3(1/3)x = 3( -2-2y )

x = 3(-2)-3(2y)

x = -6-6y

2 ) Se despeja a " x " en la ecuación " (1/2)x+3y = 3 " :

(1/2)x+3y = 3

1/2(x)+3y-3y = 3-3y

(1/2)x = 3-3y

2(1/2)x = 2(3-3y)

x = 2(3)-2(3y)

x = 6-6y

3 ) Se igualan las ecuaciones resultantes " x = -6-6y " y " x = 6-6y " :

-6-6y = 6-6y

-6-6 = -6y+6y

-12 ≠ 0