Evaluate
7.1
Factor
\frac{71}{2 \cdot 5} = 7\frac{1}{10} = 7.1
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10-\frac{1.45}{0.5}
Add 1.25 and 0.2 to get 1.45.
10-\frac{145}{50}
Expand \frac{1.45}{0.5} by multiplying both numerator and the denominator by 100.
10-\frac{29}{10}
Reduce the fraction \frac{145}{50} to lowest terms by extracting and canceling out 5.
\frac{100}{10}-\frac{29}{10}
Convert 10 to fraction \frac{100}{10}.
\frac{100-29}{10}
Since \frac{100}{10} and \frac{29}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{71}{10}
Subtract 29 from 100 to get 71.
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}