Datrys 8(2/3)^-1(6/4)(4/2)^-7

$$8 ( \frac { 2 } { 3 } ) ^ { - 1 } ( \frac { 6 } { 4 } ) ( \frac { 4 } { 2 } ) ^ { - 7 }$$

Enrhifo

$$\frac{9}{64}=0.140625$$

Camau Ateb

Cyfrifo \frac{2}{3} i bŵer -1 a chael \frac{3}{2}.

$$8\times \frac{3}{2}\times \frac{6}{4}\times \left(\frac{4}{2}\right)^{-7}$$

Lluosi 8 a \frac{3}{2} i gael 12.

$$12\times \frac{6}{4}\times \left(\frac{4}{2}\right)^{-7}$$

Lleihau'r ffracsiwn \frac{6}{4} i'r graddau lleiaf posib drwy dynnu a chanslo allan 2.

$$12\times \frac{3}{2}\times \left(\frac{4}{2}\right)^{-7}$$

Lluosi 12 a \frac{3}{2} i gael 18.

$$18\times \left(\frac{4}{2}\right)^{-7}$$

Rhannu 4 â 2 i gael 2.

$$18\times 2^{-7}$$

Cyfrifo 2 i bŵer -7 a chael \frac{1}{128}.

$$18\times \frac{1}{128}$$

Lluosi 18 a \frac{1}{128} i gael \frac{9}{64}.

$$\frac{9}{64}$$

Ffactor

$$\frac{3 ^ {2}}{2 ^ {6}} = 0.140625$$