Evaluate
405.5
Factor
\frac{811}{2} = 405\frac{1}{2} = 405.5
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196.5+\frac{11}{4}\times 76
Subtract 10 from 21 to get 11.
196.5+\frac{11\times 76}{4}
Express \frac{11}{4}\times 76 as a single fraction.
196.5+\frac{836}{4}
Multiply 11 and 76 to get 836.
196.5+209
Divide 836 by 4 to get 209.
405.5
Add 196.5 and 209 to get 405.5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
Arithmetic
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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}