Evaluate
20.75
Factor
\frac{83}{2 ^ {2}} = 20\frac{3}{4} = 20.75
Share
Copied to clipboard
3\times 7.25+2\times 7-15
Add 4.25 and 3 to get 7.25.
21.75+2\times 7-15
Multiply 3 and 7.25 to get 21.75.
21.75+14-15
Multiply 2 and 7 to get 14.
35.75-15
Add 21.75 and 14 to get 35.75.
20.75
Subtract 15 from 35.75 to get 20.75.
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}