Solve for y
y=\frac{x-13}{2}
Solve for x
x=2y+13
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-2y=13-x
Subtract x from both sides.
\frac{-2y}{-2}=\frac{13-x}{-2}
Divide both sides by -2.
y=\frac{13-x}{-2}
Dividing by -2 undoes the multiplication by -2.
y=\frac{x-13}{2}
Divide 13-x by -2.
x=13+2y
Add 2y to both sides.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
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Limits
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