Respuestas
Respuesta:
Explicación paso a paso:
En la 1era ecuación
(x+1)/3 + (y - 1)/2 = 0 m.c.m(2,3) = 6
6.(x+1)/3 + 6.(y - 1)/2 = 6.0
2(x + 1) + 3(y - 1) = 0
2x + 2 + 3y - 3 =
2x + 3y = 1 despeja "x"
x = (1 - 3y)/2
En la 2da ecuación
m..c.m.(3,4) = 12
12.(x + 2y)/3 - 12.(x+y+2)/4 = 12.0
4(x + 2y) - 3(x + y + 2) = 0
4x + 8y - 3x - 3y - 6 = 0
x + 5y = 6 despeja "x"
x = 6 - 5y
IGUALA las "x"
6 - 5y = (1 - 3y)/2
12 - 10 y = 1 - 3y
- 7y = -11
y = 11/7
reemplazo en x = 6 - 5y
x = 6 - 5(11/7) = - 13/7
OK
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x/2 + y/3 = 4 => 6(x/2 + y/3) = 6.4
3x + 2y = 24, despeja
x = (24 - 2y)/3
en la 2da ec
x/3 + y = 1 => x + 3y = 3
despeja: x = 3 - 3y
igualas
(24 - 2y)/3 = 3 - 3y
24 - 2y = 9 - 9y
9y - 2y = 9 - 24
7y = -15
y = - 15/7
En x = 3 - 3y
x = 3 - 3(15/7) = - 24
***********
3x + 2y = 7 => x = (7 - 2y)/3
4x - 3y = - 2 => x = (3y - 2)/4
iguala
(7 - 2y)/3 = (3y - 2)/4
4.(7 - 2y) = 3.(3y - 2)
28 - 4y = 9y - 6
- 13y = -34/6
y = 17/26
reemplaza y hallas x