Enrhifo
\frac{397}{20}=19.85
Ffactor
\frac{397}{2 ^ {2} \cdot 5} = 19\frac{17}{20} = 19.85
Rhannu
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\frac{10+3}{5}\times \frac{5\times 5+5}{5}+\frac{\frac{7\times 2+3}{2}}{2}
Lluosi 2 a 5 i gael 10.
\frac{13}{5}\times \frac{5\times 5+5}{5}+\frac{\frac{7\times 2+3}{2}}{2}
Adio 10 a 3 i gael 13.
\frac{13}{5}\times \frac{25+5}{5}+\frac{\frac{7\times 2+3}{2}}{2}
Lluosi 5 a 5 i gael 25.
\frac{13}{5}\times \frac{30}{5}+\frac{\frac{7\times 2+3}{2}}{2}
Adio 25 a 5 i gael 30.
\frac{13}{5}\times 6+\frac{\frac{7\times 2+3}{2}}{2}
Rhannu 30 â 5 i gael 6.
\frac{13\times 6}{5}+\frac{\frac{7\times 2+3}{2}}{2}
Mynegwch \frac{13}{5}\times 6 fel ffracsiwn unigol.
\frac{78}{5}+\frac{\frac{7\times 2+3}{2}}{2}
Lluosi 13 a 6 i gael 78.
\frac{78}{5}+\frac{7\times 2+3}{2\times 2}
Mynegwch \frac{\frac{7\times 2+3}{2}}{2} fel ffracsiwn unigol.
\frac{78}{5}+\frac{14+3}{2\times 2}
Lluosi 7 a 2 i gael 14.
\frac{78}{5}+\frac{17}{2\times 2}
Adio 14 a 3 i gael 17.
\frac{78}{5}+\frac{17}{4}
Lluosi 2 a 2 i gael 4.
\frac{312}{20}+\frac{85}{20}
Lluosrif lleiaf cyffredin 5 a 4 yw 20. Troswch \frac{78}{5} a \frac{17}{4} yn ffracsiynau gyda’r enwadur 20.
\frac{312+85}{20}
Gan fod gan \frac{312}{20} a \frac{85}{20} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.
\frac{397}{20}
Adio 312 a 85 i gael 397.
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