Datrys (2/3)^-2/6^-1+7^0

$$\frac { ( \frac { 2 } { 3 } ) ^ { - 2 } } { 6 ^ { - 1 } + 7 ^ { 0 } }$$

Enrhifo

$$\frac{27}{14}\approx 1.928571429$$

Camau Ateb

Cyfrifo \frac{2}{3} i bŵer -2 a chael \frac{9}{4}.

$$\frac{\frac{9}{4}}{6^{-1}+7^{0}}$$

Cyfrifo 6 i bŵer -1 a chael \frac{1}{6}.

$$\frac{\frac{9}{4}}{\frac{1}{6}+7^{0}}$$

Cyfrifo 7 i bŵer 0 a chael 1.

$$\frac{\frac{9}{4}}{\frac{1}{6}+1}$$

Adio \frac{1}{6} a 1 i gael \frac{7}{6}.

$$\frac{\frac{9}{4}}{\frac{7}{6}}$$

Rhannwch \frac{9}{4} â \frac{7}{6} drwy luosi \frac{9}{4} â chilydd \frac{7}{6}.

$$\frac{9}{4}\times \frac{6}{7}$$

Lluosi \frac{9}{4} a \frac{6}{7} i gael \frac{27}{14}.

$$\frac{27}{14}$$

Ffactor

$$\frac{3 ^ {3}}{2 \cdot 7} = 1\frac{13}{14} = 1.9285714285714286$$