Tìm x: 2. /x +2 / - 4. ( x + 1 ) = 2.(x - 3 ) - / x + 2 / + 1

a, 2. /x +2 / - 4. ( x + 1 ) = 2.(x - 3 ) - / x + 2 / + 1 b, 2. / x + 2 / + 3 = x - 1 c, 4. [ ( x + 2 ) . 3 - 2 ] + 6 = x +2 d, 2. [2(x - 2) - 3. ( x + 1)] - 1 = x + 1