Solve for x
x=-\frac{2}{9}\approx -0.222222222
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-5x+2-4x=4
Subtract 4x from both sides.
-9x+2=4
Combine -5x and -4x to get -9x.
-9x=4-2
Subtract 2 from both sides.
-9x=2
Subtract 2 from 4 to get 2.
x=\frac{2}{-9}
Divide both sides by -9.
x=-\frac{2}{9}
Fraction \frac{2}{-9} can be rewritten as -\frac{2}{9} by extracting the negative sign.
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
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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