0.9. Решите систему уравнений: (х – у = 2, [2(x+y)- x = -6, 1) 4) |2x - 3y = -1; 3х - (х - у) = 0; J4х = -6y, х+5у = -2, 5) 7y - 2x = 20; |0, 5х – у = 6; 2) 3) 8x — Зу = 7, 3х +y = 9; (2x + 3(x+y) = 11, 6) 7(x+3y) - 4у = -23.
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