1. 9x- y= 16
X+ y =8
2. 7x + 3y = -26
4x + y = -4
3. 6x – 5y = -43
x - 5y = -28
4. 2(x - y) = 5
4(1 - y) = 3x
5. 5x – 4y = 0
3x - 2y = 4
Utiliza el método de cramer con operación
Porfavor ayudenme :((
Respuestas
Respuesta:
1. x = 2,4 y = 5,6
2. x = 2,8 y = -15,2
3. x = -3 y = 5
4. x = 2 y = -1/2
5. x = 8 y = 10
Explicación paso a paso:
Método de Cramer:
1. 9x- y= 16
X+ y =8
[9 -1] [x] [16] x = 1x16 - (-1)(8)/9x1 - 1(-1) = 2,4
[1 1] [y] [8] y = 9x8 - 16x1/9x1 - 1(-1) = 5,6
x = 2,4 y = 5,6
2. 7x + 3y = -26
4x + y = -4
[7 3] [x] [-26] x = (-26)(1) - (-4)(3)/7x1 - 4x3 = 2,8
[4 1] [y] [-4] y = 7(-4) - 4(-26)/7x1 - 4x3 = -15,2
x = 2,8 y = -15,2
3. 6x – 5y = -43
x - 5y = -28
[6 -5] [x] [-43] x = (-43)(-5) - (-28)(-5)/6(-5) - 1(-5) = -3
[1 -5] [y] [-28] y = 6(-28) - 1(-43)/6(-5) - 1(-5) = 5
x = -3 y = 5
4. 2(x - y) = 5 = 2x - 2y = 5
4(1 - y) = 3x = -3x - 4y = -4
[2 -2] [x] [5] x = 5(-4) - (-4)(-2)/2(-4) - (-3)(-2) = 2
[-3 -4] [y] [-4] y = 2(-4) - (-3)(5)/2(-4) - (-3)(-2) = -1/2
x = 2 y = -1/2
5. 5x – 4y = 0
3x - 2y = 4
[5 -4] [x] [0] x = 0(-2) - 4(-4)/5(-2) - 3(-4) = 8
[3 -2] [y] [4] y = 5x4 - 3x0/5(-2) - 3(-4) = 10
x = 8 y = 10
RPTA: 1. x = 2,4 y = 5,6
2. x = 2,8 y = -15,2
3. x = -3 y = 5
4. x = 2 y = -1/2
5. x = 8 y = 10
SALUDOS