Evaluate
84
Factor
2^{2}\times 3\times 7
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\frac{34+8}{17}+\frac{81\times 17+9}{17}
Multiply 2 and 17 to get 34.
\frac{42}{17}+\frac{81\times 17+9}{17}
Add 34 and 8 to get 42.
\frac{42}{17}+\frac{1377+9}{17}
Multiply 81 and 17 to get 1377.
\frac{42}{17}+\frac{1386}{17}
Add 1377 and 9 to get 1386.
\frac{42+1386}{17}
Since \frac{42}{17} and \frac{1386}{17} have the same denominator, add them by adding their numerators.
\frac{1428}{17}
Add 42 and 1386 to get 1428.
84
Divide 1428 by 17 to get 84.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}