Evaluate
\frac{139}{10}=13.9
Factor
\frac{139}{2 \cdot 5} = 13\frac{9}{10} = 13.9
Quiz
Arithmetic
5 problems similar to:
\frac { 14 \times 10 + 15 \times 7 + 11 \times 3 } { 10 + 7 + 3 }
Share
Copied to clipboard
\frac{140+105+33}{10+7+3}
Multiply 14 and 10 to get 140. Multiply 15 and 7 to get 105. Multiply 11 and 3 to get 33.
\frac{245+33}{10+7+3}
Add 140 and 105 to get 245.
\frac{278}{10+7+3}
Add 245 and 33 to get 278.
\frac{278}{17+3}
Add 10 and 7 to get 17.
\frac{278}{20}
Add 17 and 3 to get 20.
\frac{139}{10}
Reduce the fraction \frac{278}{20} to lowest terms by extracting and canceling out 2.
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}