Solve for x
x=\frac{1}{3}\approx 0.333333333
Graph
Share
Copied to clipboard
x-\frac{8}{9}+\frac{3\times 7}{9}=4\times \frac{4}{9}
Express 3\times \frac{7}{9} as a single fraction.
x-\frac{8}{9}+\frac{21}{9}=4\times \frac{4}{9}
Multiply 3 and 7 to get 21.
x-\frac{8}{9}+\frac{7}{3}=4\times \frac{4}{9}
Reduce the fraction \frac{21}{9} to lowest terms by extracting and canceling out 3.
x-\frac{8}{9}+\frac{21}{9}=4\times \frac{4}{9}
Least common multiple of 9 and 3 is 9. Convert -\frac{8}{9} and \frac{7}{3} to fractions with denominator 9.
x+\frac{-8+21}{9}=4\times \frac{4}{9}
Since -\frac{8}{9} and \frac{21}{9} have the same denominator, add them by adding their numerators.
x+\frac{13}{9}=4\times \frac{4}{9}
Add -8 and 21 to get 13.
x+\frac{13}{9}=\frac{4\times 4}{9}
Express 4\times \frac{4}{9} as a single fraction.
x+\frac{13}{9}=\frac{16}{9}
Multiply 4 and 4 to get 16.
x=\frac{16}{9}-\frac{13}{9}
Subtract \frac{13}{9} from both sides.
x=\frac{16-13}{9}
Since \frac{16}{9} and \frac{13}{9} have the same denominator, subtract them by subtracting their numerators.
x=\frac{3}{9}
Subtract 13 from 16 to get 3.
x=\frac{1}{3}
Reduce the fraction \frac{3}{9} to lowest terms by extracting and canceling out 3.
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}