Solve for a
a=2x
Solve for x
x=\frac{a}{2}
Graph
Share
Copied to clipboard
3a=4x+2x
Add 2x to both sides.
3a=6x
Combine 4x and 2x to get 6x.
\frac{3a}{3}=\frac{6x}{3}
Divide both sides by 3.
a=\frac{6x}{3}
Dividing by 3 undoes the multiplication by 3.
a=2x
Divide 6x by 3.
-2x+3a-4x=0
Subtract 4x from both sides.
-6x+3a=0
Combine -2x and -4x to get -6x.
-6x=-3a
Subtract 3a from both sides. Anything subtracted from zero gives its negation.
\frac{-6x}{-6}=-\frac{3a}{-6}
Divide both sides by -6.
x=-\frac{3a}{-6}
Dividing by -6 undoes the multiplication by -6.
x=\frac{a}{2}
Divide -3a by -6.
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}