Răspuns:
(6²³ + 6²²)/(12×(2³×3³)⁷)=(6²³ + 6²²)/(12*(6³)⁷)=(6²³ + 6²²)/(12*6²¹)=
=(7*6²²)/(12*6²¹)=(7*6¹)/12=(7*6)/12=42/12=3 1/2
