Решите систему уравнений.8х-2y=149x+4y=-33y-z=55y+2z=12

Первое х=1, у=-3Второе у=2, z=1

[latex] left { {{8x-2y=14|2} atop {9x+4y=-3}} ight. [/latex][latex] left { {{16x-4y=28} atop {9x+4y=-3}} ight. [/latex][latex] left { {{16x-4y=28} atop {25x=25}} ight. [/latex][latex] left { {{-4y=12} atop {x=1}} ight. [/latex][latex] left { {{y=-3} atop {x=1}} ight. [/latex][latex] left { {{3y-z=5|2} atop {5y+2z=12}} ight. [/latex][latex] left { {{6y-2z=10} atop {5y+2z=12}} ight. [/latex][latex] left { {{6y-2z=10} atop {11y=22}} ight. [/latex][latex] left { {{-2z=-2} atop {y=2}} ight. [/latex][latex] left { {{z=1} atop {y=2}} ight. [/latex]