Evaluate
-\frac{18}{23}\approx -0.782608696
Factor
-\frac{18}{23} = -0.782608695652174
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\frac{3\times \frac{1}{4}+\frac{1}{4}}{2\left(-\frac{1}{3}\right)^{2}-\frac{3}{2}}
Calculate \frac{1}{2} to the power of 2 and get \frac{1}{4}.
\frac{\frac{3}{4}+\frac{1}{4}}{2\left(-\frac{1}{3}\right)^{2}-\frac{3}{2}}
Multiply 3 and \frac{1}{4} to get \frac{3}{4}.
\frac{\frac{3+1}{4}}{2\left(-\frac{1}{3}\right)^{2}-\frac{3}{2}}
Since \frac{3}{4} and \frac{1}{4} have the same denominator, add them by adding their numerators.
\frac{\frac{4}{4}}{2\left(-\frac{1}{3}\right)^{2}-\frac{3}{2}}
Add 3 and 1 to get 4.
\frac{1}{2\left(-\frac{1}{3}\right)^{2}-\frac{3}{2}}
Divide 4 by 4 to get 1.
\frac{1}{2\times \frac{1}{9}-\frac{3}{2}}
Calculate -\frac{1}{3} to the power of 2 and get \frac{1}{9}.
\frac{1}{\frac{2}{9}-\frac{3}{2}}
Multiply 2 and \frac{1}{9} to get \frac{2}{9}.
\frac{1}{\frac{4}{18}-\frac{27}{18}}
Least common multiple of 9 and 2 is 18. Convert \frac{2}{9} and \frac{3}{2} to fractions with denominator 18.
\frac{1}{\frac{4-27}{18}}
Since \frac{4}{18} and \frac{27}{18} have the same denominator, subtract them by subtracting their numerators.
\frac{1}{-\frac{23}{18}}
Subtract 27 from 4 to get -23.
1\left(-\frac{18}{23}\right)
Divide 1 by -\frac{23}{18} by multiplying 1 by the reciprocal of -\frac{23}{18}.
-\frac{18}{23}
Multiply 1 and -\frac{18}{23} to get -\frac{18}{23}.
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}