Question

4x + 7y = 9 3x + 6y = 10​

Answer 1

RESPUESTA:

-3(4x + 7y = 9)

4(3x + 6y = 10)

_____________

-12x - 21y = -27

12x + 18y = 40

_____________

-3x = 13

x = -13/3

.....

3x + 6y = 10

3(-13/3) + 6y = 10

-13 + 6y = 10

6y = 23

y = 23/6