Evaluate
\frac{3\sqrt{7}}{7}+\frac{15}{14}\approx 2.20532199
Factor
\frac{3 {(2 \sqrt{7} + 5)}}{14} = 2.205321990456253
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\frac{\frac{\sqrt{1}}{\sqrt{7}}}{\frac{1}{3}}+\frac{\frac{3}{2}}{1-\frac{1}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Rewrite the square root of the division \sqrt{\frac{1}{7}} as the division of square roots \frac{\sqrt{1}}{\sqrt{7}}.
\frac{\frac{1}{\sqrt{7}}}{\frac{1}{3}}+\frac{\frac{3}{2}}{1-\frac{1}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Calculate the square root of 1 and get 1.
\frac{\frac{\sqrt{7}}{\left(\sqrt{7}\right)^{2}}}{\frac{1}{3}}+\frac{\frac{3}{2}}{1-\frac{1}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Rationalize the denominator of \frac{1}{\sqrt{7}} by multiplying numerator and denominator by \sqrt{7}.
\frac{\frac{\sqrt{7}}{7}}{\frac{1}{3}}+\frac{\frac{3}{2}}{1-\frac{1}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
The square of \sqrt{7} is 7.
\frac{\sqrt{7}\times 3}{7}+\frac{\frac{3}{2}}{1-\frac{1}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Divide \frac{\sqrt{7}}{7} by \frac{1}{3} by multiplying \frac{\sqrt{7}}{7} by the reciprocal of \frac{1}{3}.
\frac{\sqrt{7}\times 3}{7}+\frac{\frac{3}{2}}{\frac{8}{8}-\frac{1}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Convert 1 to fraction \frac{8}{8}.
\frac{\sqrt{7}\times 3}{7}+\frac{\frac{3}{2}}{\frac{8-1}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Since \frac{8}{8} and \frac{1}{8} have the same denominator, subtract them by subtracting their numerators.
\frac{\sqrt{7}\times 3}{7}+\frac{\frac{3}{2}}{\frac{7}{8}}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Subtract 1 from 8 to get 7.
\frac{\sqrt{7}\times 3}{7}+\frac{3}{2}\times \frac{8}{7}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Divide \frac{3}{2} by \frac{7}{8} by multiplying \frac{3}{2} by the reciprocal of \frac{7}{8}.
\frac{\sqrt{7}\times 3}{7}+\frac{3\times 8}{2\times 7}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Multiply \frac{3}{2} times \frac{8}{7} by multiplying numerator times numerator and denominator times denominator.
\frac{\sqrt{7}\times 3}{7}+\frac{24}{14}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Do the multiplications in the fraction \frac{3\times 8}{2\times 7}.
\frac{\sqrt{7}\times 3}{7}+\frac{12}{7}-\frac{\frac{3}{7}}{1-\frac{1}{3}}
Reduce the fraction \frac{24}{14} to lowest terms by extracting and canceling out 2.
\frac{\sqrt{7}\times 3}{7}+\frac{12}{7}-\frac{\frac{3}{7}}{\frac{3}{3}-\frac{1}{3}}
Convert 1 to fraction \frac{3}{3}.
\frac{\sqrt{7}\times 3}{7}+\frac{12}{7}-\frac{\frac{3}{7}}{\frac{3-1}{3}}
Since \frac{3}{3} and \frac{1}{3} have the same denominator, subtract them by subtracting their numerators.
\frac{\sqrt{7}\times 3}{7}+\frac{12}{7}-\frac{\frac{3}{7}}{\frac{2}{3}}
Subtract 1 from 3 to get 2.
\frac{\sqrt{7}\times 3}{7}+\frac{12}{7}-\frac{3}{7}\times \frac{3}{2}
Divide \frac{3}{7} by \frac{2}{3} by multiplying \frac{3}{7} by the reciprocal of \frac{2}{3}.
\frac{\sqrt{7}\times 3}{7}+\frac{12}{7}-\frac{3\times 3}{7\times 2}
Multiply \frac{3}{7} times \frac{3}{2} by multiplying numerator times numerator and denominator times denominator.
\frac{\sqrt{7}\times 3}{7}+\frac{12}{7}-\frac{9}{14}
Do the multiplications in the fraction \frac{3\times 3}{7\times 2}.
\frac{\sqrt{7}\times 3}{7}+\frac{24}{14}-\frac{9}{14}
Least common multiple of 7 and 14 is 14. Convert \frac{12}{7} and \frac{9}{14} to fractions with denominator 14.
\frac{\sqrt{7}\times 3}{7}+\frac{24-9}{14}
Since \frac{24}{14} and \frac{9}{14} have the same denominator, subtract them by subtracting their numerators.
\frac{\sqrt{7}\times 3}{7}+\frac{15}{14}
Subtract 9 from 24 to get 15.
\frac{2\sqrt{7}\times 3}{14}+\frac{15}{14}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 7 and 14 is 14. Multiply \frac{\sqrt{7}\times 3}{7} times \frac{2}{2}.
\frac{2\sqrt{7}\times 3+15}{14}
Since \frac{2\sqrt{7}\times 3}{14} and \frac{15}{14} have the same denominator, add them by adding their numerators.
\frac{6\sqrt{7}+15}{14}
Do the multiplications in 2\sqrt{7}\times 3+15.
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}