Решите систему уравнений 6x+3=5x-4(5y+4) 3(2x-3y)-6x=8-y
6x+3=5x-4(5y+4) 3(2x-3y)-6x=8-y 6x+3=5x-20y-16 6x-9y-6x=8-y 6x+3-5x+20y+16=0 6x-9y-6x-8+y=0 x+20y=-19 -8y=8 y= -1 x= -19-20y y=-1 x=-19+20=1 Ответ: (1; -1).