Evaluate
\frac{7}{20}=0.35
Factor
\frac{7}{2 ^ {2} \cdot 5} = 0.35
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\left(\frac{2+1}{2}-\frac{\frac{1}{2}}{\frac{1\times 2+1}{2}}\right)\times \frac{3}{10}
Multiply 1 and 2 to get 2.
\left(\frac{3}{2}-\frac{\frac{1}{2}}{\frac{1\times 2+1}{2}}\right)\times \frac{3}{10}
Add 2 and 1 to get 3.
\left(\frac{3}{2}-\frac{2}{2\left(1\times 2+1\right)}\right)\times \frac{3}{10}
Divide \frac{1}{2} by \frac{1\times 2+1}{2} by multiplying \frac{1}{2} by the reciprocal of \frac{1\times 2+1}{2}.
\left(\frac{3}{2}-\frac{2}{2\left(2+1\right)}\right)\times \frac{3}{10}
Multiply 1 and 2 to get 2.
\left(\frac{3}{2}-\frac{2}{2\times 3}\right)\times \frac{3}{10}
Add 2 and 1 to get 3.
\left(\frac{3}{2}-\frac{2}{6}\right)\times \frac{3}{10}
Multiply 2 and 3 to get 6.
\left(\frac{3}{2}-\frac{1}{3}\right)\times \frac{3}{10}
Reduce the fraction \frac{2}{6} to lowest terms by extracting and canceling out 2.
\left(\frac{9}{6}-\frac{2}{6}\right)\times \frac{3}{10}
Least common multiple of 2 and 3 is 6. Convert \frac{3}{2} and \frac{1}{3} to fractions with denominator 6.
\frac{9-2}{6}\times \frac{3}{10}
Since \frac{9}{6} and \frac{2}{6} have the same denominator, subtract them by subtracting their numerators.
\frac{7}{6}\times \frac{3}{10}
Subtract 2 from 9 to get 7.
\frac{7\times 3}{6\times 10}
Multiply \frac{7}{6} times \frac{3}{10} by multiplying numerator times numerator and denominator times denominator.
\frac{21}{60}
Do the multiplications in the fraction \frac{7\times 3}{6\times 10}.
\frac{7}{20}
Reduce the fraction \frac{21}{60} to lowest terms by extracting and canceling out 3.
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}