Решите графически систему уравнений: А). x-2y=6 3x+2y=-6 Б). x-y=0 2x+3y=-5 Выясните, имеет ли система решения и сколько: А) 4y-x=12 3y+x=-3 Б) 1,5x=1 -3x+2y=-2 В)2x=11-2y 6y=22-4x
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