Solve for x
x=\frac{9y-5}{8}
Solve for y
y=\frac{8x+5}{9}
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8x=-5+9y
Add 9y to both sides.
8x=9y-5
The equation is in standard form.
\frac{8x}{8}=\frac{9y-5}{8}
Divide both sides by 8.
x=\frac{9y-5}{8}
Dividing by 8 undoes the multiplication by 8.
-9y=-5-8x
Subtract 8x from both sides.
-9y=-8x-5
The equation is in standard form.
\frac{-9y}{-9}=\frac{-8x-5}{-9}
Divide both sides by -9.
y=\frac{-8x-5}{-9}
Dividing by -9 undoes the multiplication by -9.
y=\frac{8x+5}{9}
Divide -5-8x by -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
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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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