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31. Rezolvați sistemele: x-y+5 2 x+4y-1 3 2x-2y+31 =3 2x+y+3 b) 2x-6y+35 x-y-3 2 x√3-y√54 Rezolvați sistem =3 2x-y+3 -x+y-2 3 x(√2-1)+ (2x+3y-4_2 2x+3y-9 3 x(√3-1) 22 VII-a c) 5x+2y-7 3 4x-3y+10_4' x+2y+5 2x+y-2 2 d) x(√3-√ x+2y-7 6 x(2√2- 3 x-2y+2 5 (x(2-√​