Evaluate
\frac{31-4x}{9x-47}
Expand
\frac{31-4x}{9x-47}
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\frac{\frac{x+1}{x-6}-\frac{5\left(x-6\right)}{x-6}}{\frac{x+1}{x-6}+8}
To add or subtract expressions, expand them to make their denominators the same. Multiply 5 times \frac{x-6}{x-6}.
\frac{\frac{x+1-5\left(x-6\right)}{x-6}}{\frac{x+1}{x-6}+8}
Since \frac{x+1}{x-6} and \frac{5\left(x-6\right)}{x-6} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{x+1-5x+30}{x-6}}{\frac{x+1}{x-6}+8}
Do the multiplications in x+1-5\left(x-6\right).
\frac{\frac{-4x+31}{x-6}}{\frac{x+1}{x-6}+8}
Combine like terms in x+1-5x+30.
\frac{\frac{-4x+31}{x-6}}{\frac{x+1}{x-6}+\frac{8\left(x-6\right)}{x-6}}
To add or subtract expressions, expand them to make their denominators the same. Multiply 8 times \frac{x-6}{x-6}.
\frac{\frac{-4x+31}{x-6}}{\frac{x+1+8\left(x-6\right)}{x-6}}
Since \frac{x+1}{x-6} and \frac{8\left(x-6\right)}{x-6} have the same denominator, add them by adding their numerators.
\frac{\frac{-4x+31}{x-6}}{\frac{x+1+8x-48}{x-6}}
Do the multiplications in x+1+8\left(x-6\right).
\frac{\frac{-4x+31}{x-6}}{\frac{9x-47}{x-6}}
Combine like terms in x+1+8x-48.
\frac{\left(-4x+31\right)\left(x-6\right)}{\left(x-6\right)\left(9x-47\right)}
Divide \frac{-4x+31}{x-6} by \frac{9x-47}{x-6} by multiplying \frac{-4x+31}{x-6} by the reciprocal of \frac{9x-47}{x-6}.
\frac{-4x+31}{9x-47}
Cancel out x-6 in both numerator and denominator.
\frac{\frac{x+1}{x-6}-\frac{5\left(x-6\right)}{x-6}}{\frac{x+1}{x-6}+8}
To add or subtract expressions, expand them to make their denominators the same. Multiply 5 times \frac{x-6}{x-6}.
\frac{\frac{x+1-5\left(x-6\right)}{x-6}}{\frac{x+1}{x-6}+8}
Since \frac{x+1}{x-6} and \frac{5\left(x-6\right)}{x-6} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{x+1-5x+30}{x-6}}{\frac{x+1}{x-6}+8}
Do the multiplications in x+1-5\left(x-6\right).
\frac{\frac{-4x+31}{x-6}}{\frac{x+1}{x-6}+8}
Combine like terms in x+1-5x+30.
\frac{\frac{-4x+31}{x-6}}{\frac{x+1}{x-6}+\frac{8\left(x-6\right)}{x-6}}
To add or subtract expressions, expand them to make their denominators the same. Multiply 8 times \frac{x-6}{x-6}.
\frac{\frac{-4x+31}{x-6}}{\frac{x+1+8\left(x-6\right)}{x-6}}
Since \frac{x+1}{x-6} and \frac{8\left(x-6\right)}{x-6} have the same denominator, add them by adding their numerators.
\frac{\frac{-4x+31}{x-6}}{\frac{x+1+8x-48}{x-6}}
Do the multiplications in x+1+8\left(x-6\right).
\frac{\frac{-4x+31}{x-6}}{\frac{9x-47}{x-6}}
Combine like terms in x+1+8x-48.
\frac{\left(-4x+31\right)\left(x-6\right)}{\left(x-6\right)\left(9x-47\right)}
Divide \frac{-4x+31}{x-6} by \frac{9x-47}{x-6} by multiplying \frac{-4x+31}{x-6} by the reciprocal of \frac{9x-47}{x-6}.
\frac{-4x+31}{9x-47}
Cancel out x-6 in both numerator and denominator.
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}