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a) [4x-2[y-3(x-2)]=-6 2[3x-2(y-1)]-5y=-8 [x√2-3(y-1)=-1 √√2(2x-1)=2y-x b) 3x-y-2 =-2 x+2y x+2 1 y 1 y-1 3 = 24 (x√3+ y√2=5 ; ; d) X y 6 =√6° √2 √3​