Solve for x
x=-\frac{x_{2}}{4}-1
Solve for x_2
x_{2}=-4x-4
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4x+4=-x_{2}
Subtract x_{2} from both sides. Anything subtracted from zero gives its negation.
4x=-x_{2}-4
Subtract 4 from both sides.
\frac{4x}{4}=\frac{-x_{2}-4}{4}
Divide both sides by 4.
x=\frac{-x_{2}-4}{4}
Dividing by 4 undoes the multiplication by 4.
x=-\frac{x_{2}}{4}-1
Divide -x_{2}-4 by 4.
x_{2}+4=-4x
Subtract 4x from both sides. Anything subtracted from zero gives its negation.
x_{2}=-4x-4
Subtract 4 from both sides.
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
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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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