Datrys 51/7div21/4

$$5 \frac { 1 } { 7 } \div 2 \frac { 1 } { 4 }$$

Enrhifo

$$\frac{16}{7}\approx 2.285714286$$

Camau Ateb

Rhannwch \frac{5\times 7+1}{7} â \frac{2\times 4+1}{4} drwy luosi \frac{5\times 7+1}{7} â chilydd \frac{2\times 4+1}{4}.

$$\frac{\left(5\times 7+1\right)\times 4}{7\left(2\times 4+1\right)}$$

Lluosi 5 a 7 i gael 35.

$$\frac{\left(35+1\right)\times 4}{7\left(2\times 4+1\right)}$$

Adio 35 a 1 i gael 36.

$$\frac{36\times 4}{7\left(2\times 4+1\right)}$$

Lluosi 36 a 4 i gael 144.

$$\frac{144}{7\left(2\times 4+1\right)}$$

Lluosi 2 a 4 i gael 8.

$$\frac{144}{7\left(8+1\right)}$$

Adio 8 a 1 i gael 9.

$$\frac{144}{7\times 9}$$

Lluosi 7 a 9 i gael 63.

$$\frac{144}{63}$$

Lleihau'r ffracsiwn \frac{144}{63} i'r graddau lleiaf posib drwy dynnu a chanslo allan 9.

$$\frac{16}{7}$$

Ffactor

$$\frac{2 ^ {4}}{7} = 2\frac{2}{7} = 2.2857142857142856$$