Evaluate
0.5
Factor
\frac{1}{2} = 0.5
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\frac{\frac{2}{5}\times \frac{15}{16}}{0.4\times \frac{15}{16}+0.25\times 0.8+0.35\times 0.5}
Convert decimal number 0.4 to fraction \frac{4}{10}. Reduce the fraction \frac{4}{10} to lowest terms by extracting and canceling out 2.
\frac{\frac{2\times 15}{5\times 16}}{0.4\times \frac{15}{16}+0.25\times 0.8+0.35\times 0.5}
Multiply \frac{2}{5} times \frac{15}{16} by multiplying numerator times numerator and denominator times denominator.
\frac{\frac{30}{80}}{0.4\times \frac{15}{16}+0.25\times 0.8+0.35\times 0.5}
Do the multiplications in the fraction \frac{2\times 15}{5\times 16}.
\frac{\frac{3}{8}}{0.4\times \frac{15}{16}+0.25\times 0.8+0.35\times 0.5}
Reduce the fraction \frac{30}{80} to lowest terms by extracting and canceling out 10.
\frac{\frac{3}{8}}{\frac{2}{5}\times \frac{15}{16}+0.25\times 0.8+0.35\times 0.5}
Convert decimal number 0.4 to fraction \frac{4}{10}. Reduce the fraction \frac{4}{10} to lowest terms by extracting and canceling out 2.
\frac{\frac{3}{8}}{\frac{2\times 15}{5\times 16}+0.25\times 0.8+0.35\times 0.5}
Multiply \frac{2}{5} times \frac{15}{16} by multiplying numerator times numerator and denominator times denominator.
\frac{\frac{3}{8}}{\frac{30}{80}+0.25\times 0.8+0.35\times 0.5}
Do the multiplications in the fraction \frac{2\times 15}{5\times 16}.
\frac{\frac{3}{8}}{\frac{3}{8}+0.25\times 0.8+0.35\times 0.5}
Reduce the fraction \frac{30}{80} to lowest terms by extracting and canceling out 10.
\frac{\frac{3}{8}}{\frac{3}{8}+0.2+0.35\times 0.5}
Multiply 0.25 and 0.8 to get 0.2.
\frac{\frac{3}{8}}{\frac{3}{8}+\frac{1}{5}+0.35\times 0.5}
Convert decimal number 0.2 to fraction \frac{2}{10}. Reduce the fraction \frac{2}{10} to lowest terms by extracting and canceling out 2.
\frac{\frac{3}{8}}{\frac{15}{40}+\frac{8}{40}+0.35\times 0.5}
Least common multiple of 8 and 5 is 40. Convert \frac{3}{8} and \frac{1}{5} to fractions with denominator 40.
\frac{\frac{3}{8}}{\frac{15+8}{40}+0.35\times 0.5}
Since \frac{15}{40} and \frac{8}{40} have the same denominator, add them by adding their numerators.
\frac{\frac{3}{8}}{\frac{23}{40}+0.35\times 0.5}
Add 15 and 8 to get 23.
\frac{\frac{3}{8}}{\frac{23}{40}+0.175}
Multiply 0.35 and 0.5 to get 0.175.
\frac{\frac{3}{8}}{\frac{23}{40}+\frac{7}{40}}
Convert decimal number 0.175 to fraction \frac{175}{1000}. Reduce the fraction \frac{175}{1000} to lowest terms by extracting and canceling out 25.
\frac{\frac{3}{8}}{\frac{23+7}{40}}
Since \frac{23}{40} and \frac{7}{40} have the same denominator, add them by adding their numerators.
\frac{\frac{3}{8}}{\frac{30}{40}}
Add 23 and 7 to get 30.
\frac{\frac{3}{8}}{\frac{3}{4}}
Reduce the fraction \frac{30}{40} to lowest terms by extracting and canceling out 10.
\frac{3}{8}\times \frac{4}{3}
Divide \frac{3}{8} by \frac{3}{4} by multiplying \frac{3}{8} by the reciprocal of \frac{3}{4}.
\frac{3\times 4}{8\times 3}
Multiply \frac{3}{8} times \frac{4}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{4}{8}
Cancel out 3 in both numerator and denominator.
\frac{1}{2}
Reduce the fraction \frac{4}{8} to lowest terms by extracting and canceling out 4.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\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]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}