Question

ayuda como se resuelve
5x + 8y = 8
4x - 8y = -8​

Answer 1

Respuesta:

Puedes Resolver con cualquier metodo. Te hare con el de igualacion.

5x + 8y = 8

5x = 8 -8y

x= (8 -8y)/5

4x - 8y = -8​

x - 2y = -2

x= -2 +2y

igualamos

X= X

(8 -8y)/5 = - 2 +2y

8 -8y = - 10 +10y

-8y -10y = - 10 -8

-18y = - 18

y= 18/18

y= 1

x= -2 +2y

x= -2 +2(1)

x= -2+2

x= 0.

comprobamos

5x + 8y = 8

5(0) +8(1) = 8

0 +8 = 8

8= 8.

4x - 8y = -8​

4(0) -8(1) = -8

-8 = -8

saludos❤