Evaluate
-\frac{13}{8}=-1.625
Factor
-\frac{13}{8} = -1\frac{5}{8} = -1.625
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\frac{-4}{4}+\frac{1}{4}\left(-3\right)+\frac{1}{4}\left(-1\right)+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Multiply \frac{1}{4} and -4 to get \frac{-4}{4}.
-1+\frac{1}{4}\left(-3\right)+\frac{1}{4}\left(-1\right)+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Divide -4 by 4 to get -1.
-1+\frac{-3}{4}+\frac{1}{4}\left(-1\right)+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Multiply \frac{1}{4} and -3 to get \frac{-3}{4}.
-1-\frac{3}{4}+\frac{1}{4}\left(-1\right)+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Fraction \frac{-3}{4} can be rewritten as -\frac{3}{4} by extracting the negative sign.
-\frac{4}{4}-\frac{3}{4}+\frac{1}{4}\left(-1\right)+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Convert -1 to fraction -\frac{4}{4}.
\frac{-4-3}{4}+\frac{1}{4}\left(-1\right)+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Since -\frac{4}{4} and \frac{3}{4} have the same denominator, subtract them by subtracting their numerators.
-\frac{7}{4}+\frac{1}{4}\left(-1\right)+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Subtract 3 from -4 to get -7.
-\frac{7}{4}-\frac{1}{4}+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Multiply \frac{1}{4} and -1 to get -\frac{1}{4}.
\frac{-7-1}{4}+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Since -\frac{7}{4} and \frac{1}{4} have the same denominator, subtract them by subtracting their numerators.
\frac{-8}{4}+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Subtract 1 from -7 to get -8.
-2+\frac{1}{8}\times 1+\frac{1}{8}\times 2
Divide -8 by 4 to get -2.
-2+\frac{1}{8}+\frac{1}{8}\times 2
Multiply \frac{1}{8} and 1 to get \frac{1}{8}.
-\frac{16}{8}+\frac{1}{8}+\frac{1}{8}\times 2
Convert -2 to fraction -\frac{16}{8}.
\frac{-16+1}{8}+\frac{1}{8}\times 2
Since -\frac{16}{8} and \frac{1}{8} have the same denominator, add them by adding their numerators.
-\frac{15}{8}+\frac{1}{8}\times 2
Add -16 and 1 to get -15.
-\frac{15}{8}+\frac{2}{8}
Multiply \frac{1}{8} and 2 to get \frac{2}{8}.
\frac{-15+2}{8}
Since -\frac{15}{8} and \frac{2}{8} have the same denominator, add them by adding their numerators.
-\frac{13}{8}
Add -15 and 2 to get -13.
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}