Question

Решите номер 9 пункт (б)

Answer 1

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