1425. Решите системы уравнений способом подстановки (1425–1427). 1) x - у - 2 = 0, |2x-3y +1 = 0; 2) -x+y-4 = 0, | 4x + y +1 = 0; A 3) (3x+y - 4 = 0, |5x+y - 10 = 0; 4) 8x - 3y - 7 = 0, (3x + y – 9 = 0; 5) (x+5y +2= 0, 0,5x-y-6= 0; 6) [12x-y-18 = 0, x+0,5y-5=0.​
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