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\frac{7}{9}-\frac{\frac{9}{4}\times \frac{4}{3}}{-\frac{27}{2}}
Convert decimal number 2.25 to fraction \frac{225}{100}. Reduce the fraction \frac{225}{100} to lowest terms by extracting and canceling out 25.
\frac{7}{9}-\frac{\frac{9\times 4}{4\times 3}}{-\frac{27}{2}}
Multiply \frac{9}{4} times \frac{4}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{7}{9}-\frac{\frac{9}{3}}{-\frac{27}{2}}
Cancel out 4 in both numerator and denominator.
\frac{7}{9}-\frac{3}{-\frac{27}{2}}
Divide 9 by 3 to get 3.
\frac{7}{9}-3\left(-\frac{2}{27}\right)
Divide 3 by -\frac{27}{2} by multiplying 3 by the reciprocal of -\frac{27}{2}.
\frac{7}{9}-\frac{3\left(-2\right)}{27}
Express 3\left(-\frac{2}{27}\right) as a single fraction.
\frac{7}{9}-\frac{-6}{27}
Multiply 3 and -2 to get -6.
\frac{7}{9}-\left(-\frac{2}{9}\right)
Reduce the fraction \frac{-6}{27} to lowest terms by extracting and canceling out 3.
\frac{7}{9}+\frac{2}{9}
The opposite of -\frac{2}{9} is \frac{2}{9}.
\frac{7+2}{9}
Since \frac{7}{9} and \frac{2}{9} have the same denominator, add them by adding their numerators.
\frac{9}{9}
Add 7 and 2 to get 9.
1
Divide 9 by 9 to get 1.
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}