Use the base-swapping formula on the second term on the left: Let u = log3(x) Multiply through by LCD = 3u 3uČ + 3 = 10u 3uČ - 10u + 3 = 0 (u-3)(3u-1) = 0 u-3=0; 3u-1=0 u=3; 3u=1 u= Substitute u = log3(x) log3(x) = 3; log3(x) = x = 33 x = x = 27 x = Edwin