Solve for x
x=\frac{80-e}{9}\approx 8.586857575
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9x=80-e
Subtract e from both sides.
\frac{9x}{9}=\frac{80-e}{9}
Divide both sides by 9.
x=\frac{80-e}{9}
Dividing by 9 undoes the multiplication 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
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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