Resuelve los siguientes sistemas con el metodo de igualacion A.(3x=-4y (5x-6y=38 B. (5a 2b=15 (2a b=5 C. (W-2z=10 (2w 3z=-8 D.(3s 4t=15 (2s t=5 Ayudenme plisssssss
Respuestas
Respuesta:
A) x= 76 y = -54
B) a = -5 b= 15
C) z= 4 w=18
D) s=1 t= 3
Explicación:A ) 3x =-4y
5x-6y = 38
x= -4y/3
x = (38-6y)/5
-4y/3= (38-6y)/5
-20y = 114-18y
-20y+18y = 114
y = -57
x =76
B) 5a+2b =15
2a+b = 5
b = 15-5a/2
b = 5-2a
15-5a/2 = 5-2a
15-5a = 10-4a
-5a+4a = 10-15
-a = 5
a= -5
b= 15
C) w-2z =10
2w+3z = -8
w= 10+2z
w = -8-3z/2
10+2z = -8-3z/2
20+4z = -8-3z
28 = 7z
z= 4
w=18
D) 3s+4t =15
2s+t=5
t = 15-3s/4
t= 5-2s
15-3s/4 = 5-2s
15-3s = 20-8s
8s-3s = 20-15
5s= 5
s=1
t= 3
Respuesta:
A) x= 76 y = -54
B) a = -5 b= 15
C) z= 4 w=18
D) s=1 t= 3
Explicación:A ) 3x =-4y
5x-6y = 38
x= -4y/3
x = (38-6y)/5
-4y/3= (38-6y)/5
-20y = 114-18y
-20y+18y = 114
y = -57
x =76
B) 5a+2b =15
2a+b = 5
b = 15-5a/2
b = 5-2a
15-5a/2 = 5-2a
15-5a = 10-4a
-5a+4a = 10-15
-a = 5
a= -5
b= 15
C) w-2z =10
2w+3z = -8
w= 10+2z
w = -8-3z/2
10+2z = -8-3z/2
20+4z = -8-3z
28 = 7z
z= 4
w=18
D) 3s+4t =15
2s+t=5
t = 15-3s/4
t= 5-2s
15-3s/4 = 5-2s
15-3s = 20-8s
8s-3s = 20-15
5s= 5
s=1
t= 3