Enrhifo
\frac{39}{5}=7.8
Ffactor
\frac{3 \cdot 13}{5} = 7\frac{4}{5} = 7.8
Rhannu
Copïo i clipfwrdd
15-\frac{9\times 4}{5}
Adio 7 a 8 i gael 15.
15-\frac{36}{5}
Lluosi 9 a 4 i gael 36.
\frac{75}{5}-\frac{36}{5}
Troswch y rhif degol 15 i’r ffracsiwn \frac{75}{5}.
\frac{75-36}{5}
Gan fod gan \frac{75}{5} a \frac{36}{5} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{39}{5}
Tynnu 36 o 75 i gael 39.
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Hafaliad llinol
y = 3x + 4
Rhifyddeg
699 * 533
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Hafaliad ar y pryd
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Gwahaniaethu
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integreiddiad
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}