Evaluate
7.1
Factor
\frac{71}{2 \cdot 5} = 7\frac{1}{10} = 7.1
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\frac{48}{60}+7-0.7
Expand \frac{4.8}{6} by multiplying both numerator and the denominator by 10.
\frac{4}{5}+7-0.7
Reduce the fraction \frac{48}{60} to lowest terms by extracting and canceling out 12.
\frac{4}{5}+\frac{35}{5}-0.7
Convert 7 to fraction \frac{35}{5}.
\frac{4+35}{5}-0.7
Since \frac{4}{5} and \frac{35}{5} have the same denominator, add them by adding their numerators.
\frac{39}{5}-0.7
Add 4 and 35 to get 39.
\frac{39}{5}-\frac{7}{10}
Convert decimal number 0.7 to fraction \frac{7}{10}.
\frac{78}{10}-\frac{7}{10}
Least common multiple of 5 and 10 is 10. Convert \frac{39}{5} and \frac{7}{10} to fractions with denominator 10.
\frac{78-7}{10}
Since \frac{78}{10} and \frac{7}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{71}{10}
Subtract 7 from 78 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}