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(2x-y=3, [x-2y=3, ૩) И [x+y=3 [x-y=3? Jx-y=4, √x-y=4, 6) [3x+y=16" [x+y=6? 13. Haйдurе AUB, AB, A\B, B\A, если: a) A=(-0,5), B=(-3, 8); 6) A=N, B=[-2,6]; ​