Solve for x
x=-9
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\frac{4x}{9}-5-x=0
Subtract x from both sides.
\frac{4x}{9}-x=5
Add 5 to both sides. Anything plus zero gives itself.
4x-9x=45
Multiply both sides of the equation by 9.
-5x=45
Combine 4x and -9x to get -5x.
x=\frac{45}{-5}
Divide both sides by -5.
x=-9
Divide 45 by -5 to get -9.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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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
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Limits
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