6х+5у=0
2х+3у=-8
-----------------
6х=-5у
2х+3у=-8
-----------------
х=-5у/6
2х+3у=-8
----------------
х=-5у/6
2·(-5у/6)+3у=-8
---------------------
х=-5у/6
-5у/3 +3у=-8
---------------------
х=-5у/6
-5у+3·3у=-8·3
---------------------
х=-5у/6
-5у+9у=-24
-------------------
х=-5у/6
4у=-24
---------------------
х=-5у/6
у=-24:4
---------------------
х=-5у/6
у=-6
---------------------
х=-5·(-6)/6
у=-6
--------------------
х=5
х=-6
----------------------