6. 2ᵃ = 0,5 va 3ᵇ = 1/27 bo‘lsa, a − b ning qiymatini toping.

0,5 = 1/2 = 2⁻¹, demak a = −1. 1/27 = 3⁻³, demak b = −3.

Javob: a − b = −1 − (−3) = 2.