Solve for x
x=-\frac{2}{5}=-0.4
Graph
Share
Copied to clipboard
9x=-\frac{3}{5}-3
Subtract 3 from both sides.
9x=-\frac{3}{5}-\frac{15}{5}
Convert 3 to fraction \frac{15}{5}.
9x=\frac{-3-15}{5}
Since -\frac{3}{5} and \frac{15}{5} have the same denominator, subtract them by subtracting their numerators.
9x=-\frac{18}{5}
Subtract 15 from -3 to get -18.
x=\frac{-\frac{18}{5}}{9}
Divide both sides by 9.
x=\frac{-18}{5\times 9}
Express \frac{-\frac{18}{5}}{9} as a single fraction.
x=\frac{-18}{45}
Multiply 5 and 9 to get 45.
x=-\frac{2}{5}
Reduce the fraction \frac{-18}{45} to lowest terms by extracting and canceling out 9.
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}