Evaluate
\frac{39}{8}=4.875
Factor
\frac{3 \cdot 13}{2 ^ {3}} = 4\frac{7}{8} = 4.875
Quiz
Arithmetic
5 problems similar to:
6 \frac { 7 } { 8 } - ( 2 \frac { 1 } { 2 } - \frac { 2 } { 4 } )
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\frac{48+7}{8}-\left(\frac{2\times 2+1}{2}-\frac{2}{4}\right)
Multiply 6 and 8 to get 48.
\frac{55}{8}-\left(\frac{2\times 2+1}{2}-\frac{2}{4}\right)
Add 48 and 7 to get 55.
\frac{55}{8}-\left(\frac{4+1}{2}-\frac{2}{4}\right)
Multiply 2 and 2 to get 4.
\frac{55}{8}-\left(\frac{5}{2}-\frac{2}{4}\right)
Add 4 and 1 to get 5.
\frac{55}{8}-\left(\frac{5}{2}-\frac{1}{2}\right)
Reduce the fraction \frac{2}{4} to lowest terms by extracting and canceling out 2.
\frac{55}{8}-\frac{5-1}{2}
Since \frac{5}{2} and \frac{1}{2} have the same denominator, subtract them by subtracting their numerators.
\frac{55}{8}-\frac{4}{2}
Subtract 1 from 5 to get 4.
\frac{55}{8}-2
Divide 4 by 2 to get 2.
\frac{55}{8}-\frac{16}{8}
Convert 2 to fraction \frac{16}{8}.
\frac{55-16}{8}
Since \frac{55}{8} and \frac{16}{8} have the same denominator, subtract them by subtracting their numerators.
\frac{39}{8}
Subtract 16 from 55 to get 39.
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}