Question

AIUDAAAAA!!!!!!!
5x-7y=34
6x+8y=8

2x-3y=7
x+5y=23
método cramer
porfis es urgente

Answer 1

Respuesta:

De ambas ecuaciones despejamos x

X=(34+7y) / 5

X= (8-8y) / 6

Ahora igualamos

X=X

(34+7y)/5 = (8-8y)/6

204+42y=40-40y

82y=40-204

Y= - 2

Para x

X=(8-8y)/6

X=24/6

X=4