Question

resolver por igualacion 7x+3y=17,
8x+9y=25​

Answer 1

Respuesta:

I don't know friend sorry

Answer 2

Explicación paso a paso:

7x + 3y = 17

8x + 9y = 25

Restamos

8x + 9y - 7x + 3y = 25 - 17

X + 6y = 8

X = 8 - 6y

Remplazamos

7(8 - 6y) + 3y = 17

56 - 42y + 3y = 17

56 - 39y = 17

39y = 39

Y = 1

Remplazamos en X

X = 8 - 6y

X = 2