Evaluate
31.2
Factor
\frac{3 \cdot 13 \cdot 2 ^ {2}}{5} = 31\frac{1}{5} = 31.2
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1.8\times \frac{51+1}{3}
Multiply 17 and 3 to get 51.
1.8\times \frac{52}{3}
Add 51 and 1 to get 52.
\frac{9}{5}\times \frac{52}{3}
Convert decimal number 1.8 to fraction \frac{18}{10}. Reduce the fraction \frac{18}{10} to lowest terms by extracting and canceling out 2.
\frac{9\times 52}{5\times 3}
Multiply \frac{9}{5} times \frac{52}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{468}{15}
Do the multiplications in the fraction \frac{9\times 52}{5\times 3}.
\frac{156}{5}
Reduce the fraction \frac{468}{15} to lowest terms by extracting and canceling out 3.
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}