Datrys 3^2(5+12)-58/(frac{1{2}+5^2)div(3+21)}

$$\frac{ { 3 }^{ 2 } (5+12)-58 }{ ( \frac{ 1 }{ 2 } + { 5 }^{ 2 } ) \div (3+21) }$$

Enrhifo

$$\frac{1520}{17}\approx 89.411764706$$

Camau Ateb

Cyfrifo 3 i bŵer 2 a chael 9.

$$\frac{9\left(5+12\right)-58}{\frac{\frac{1}{2}+5^{2}}{3+21}}$$

Adio 5 a 12 i gael 17.

$$\frac{9\times 17-58}{\frac{\frac{1}{2}+5^{2}}{3+21}}$$

Lluosi 9 a 17 i gael 153.

$$\frac{153-58}{\frac{\frac{1}{2}+5^{2}}{3+21}}$$

Tynnu 58 o 153 i gael 95.

$$\frac{95}{\frac{\frac{1}{2}+5^{2}}{3+21}}$$

Cyfrifo 5 i bŵer 2 a chael 25.

$$\frac{95}{\frac{\frac{1}{2}+25}{3+21}}$$

Troswch y rhif degol 25 i’r ffracsiwn \frac{50}{2}.

$$\frac{95}{\frac{\frac{1}{2}+\frac{50}{2}}{3+21}}$$

Gan fod gan \frac{1}{2} a \frac{50}{2} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

$$\frac{95}{\frac{\frac{1+50}{2}}{3+21}}$$

Adio 1 a 50 i gael 51.

$$\frac{95}{\frac{\frac{51}{2}}{3+21}}$$

Adio 3 a 21 i gael 24.

$$\frac{95}{\frac{\frac{51}{2}}{24}}$$

Mynegwch \frac{\frac{51}{2}}{24} fel ffracsiwn unigol.

$$\frac{95}{\frac{51}{2\times 24}}$$

Lluosi 2 a 24 i gael 48.

$$\frac{95}{\frac{51}{48}}$$

Lleihau'r ffracsiwn \frac{51}{48} i'r graddau lleiaf posib drwy dynnu a chanslo allan 3.

$$\frac{95}{\frac{17}{16}}$$

Rhannwch 95 â \frac{17}{16} drwy luosi 95 â chilydd \frac{17}{16}.

$$95\times \frac{16}{17}$$

Mynegwch 95\times \frac{16}{17} fel ffracsiwn unigol.

$$\frac{95\times 16}{17}$$

Lluosi 95 a 16 i gael 1520.

$$\frac{1520}{17}$$

Ffactor

$$\frac{2 ^ {4} \cdot 5 \cdot 19}{17} = 89\frac{7}{17} = 89.41176470588235$$