Evaluate
1.86
Factor
\frac{3 \cdot 31}{2 \cdot 5 ^ {2}} = 1\frac{43}{50} = 1.86
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1.68+\frac{0.24}{4}\left(0.975\times 200-192\right)
Subtract 1.92 from 2.16 to get 0.24.
1.68+\frac{24}{400}\left(0.975\times 200-192\right)
Expand \frac{0.24}{4} by multiplying both numerator and the denominator by 100.
1.68+\frac{3}{50}\left(0.975\times 200-192\right)
Reduce the fraction \frac{24}{400} to lowest terms by extracting and canceling out 8.
1.68+\frac{3}{50}\left(195-192\right)
Multiply 0.975 and 200 to get 195.
1.68+\frac{3}{50}\times 3
Subtract 192 from 195 to get 3.
1.68+\frac{3\times 3}{50}
Express \frac{3}{50}\times 3 as a single fraction.
1.68+\frac{9}{50}
Multiply 3 and 3 to get 9.
\frac{42}{25}+\frac{9}{50}
Convert decimal number 1.68 to fraction \frac{168}{100}. Reduce the fraction \frac{168}{100} to lowest terms by extracting and canceling out 4.
\frac{84}{50}+\frac{9}{50}
Least common multiple of 25 and 50 is 50. Convert \frac{42}{25} and \frac{9}{50} to fractions with denominator 50.
\frac{84+9}{50}
Since \frac{84}{50} and \frac{9}{50} have the same denominator, add them by adding their numerators.
\frac{93}{50}
Add 84 and 9 to get 93.
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}