Question

Решите номер 9 пункт (б)

Answer 1

Воть :З$\left \{ {{3x-y=-4} \atop {x+2y=8}} \right. \left \{ {{6x-2y=-8} \atop {x+2y=8}} \right. \left \{ {{6x+x=0} \atop {x+2y=8}} \right. \left \{ {{7x=0} \atop {x+2y=8}} \right. \left \{ {{x=0} \atop {0+2y=8}} \right. \left \{ {{x=0} \atop {y=4}} \right.$