[en] A theoretical reappraisal of the branching ratios and CP asymmetries for the decays B → X_ql^+l-, with q equal to d,s, taking into account current theoretical uncertainties in the description of the inclusive decay amplitudes from the long-distance contributions, an improved treatment of the renormalization scale dependence, and other parametric dependencies. The dependence of (ΔΒ_d) and ΔR on the CKM parameters is worked out and the resulting constraints on the unitary triangle from an eventual measurement of ΔR are illustrated