Question

metodo resuelto
3x + 9y = 4
2x – y = 2

Answer 1

Explicación paso a paso:

18x-9y=18 segunda *9

3x+9y=4 suma

21x=22

x=22/21

de 2x-y=2

2*22/21-y=2

44/21-y=2

-y=2-44/21

-y=42/41-44/21=-2

y=2

2x-y=2

2*22/21-(-2)=

=44/21-(-2/1)=

=44/21-(-42/21)=

2