Solve for x
x=6
Graph
Share
Copied to clipboard
\sqrt{4x-15}-3-\left(-3\right)=-\left(-3\right)
Add 3 to both sides of the equation.
\sqrt{4x-15}=-\left(-3\right)
Subtracting -3 from itself leaves 0.
\sqrt{4x-15}=3
Subtract -3 from 0.
4x-15=9
Square both sides of the equation.
4x-15-\left(-15\right)=9-\left(-15\right)
Add 15 to both sides of the equation.
4x=9-\left(-15\right)
Subtracting -15 from itself leaves 0.
4x=24
Subtract -15 from 9.
\frac{4x}{4}=\frac{24}{4}
Divide both sides by 4.
x=\frac{24}{4}
Dividing by 4 undoes the multiplication by 4.
x=6
Divide 24 by 4.
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}