Solve for x_1
x_{1}=2y
Solve for y
y=\frac{x_{1}}{2}
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x_{1}\times 0.5=y
Swap sides so that all variable terms are on the left hand side.
0.5x_{1}=y
The equation is in standard form.
\frac{0.5x_{1}}{0.5}=\frac{y}{0.5}
Multiply both sides by 2.
x_{1}=\frac{y}{0.5}
Dividing by 0.5 undoes the multiplication by 0.5.
x_{1}=2y
Divide y by 0.5 by multiplying y by the reciprocal of 0.5.
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
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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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