Question

-3x+y=12 -y+9x=0 por favor es urgente ayyyyyyyyyyyyyyyuuuuuuuuuuuuuuuuuddddddddddddddaaaaaaaaaaaaaa

Answer 1

Respuesta:

Explicación paso a paso:

-3x+y=12

+9x-y=0

2°paso

6x=12

x=2

3°paso

-3(2)+y=12

-6+y=12

y=18