Solve for x
x=8
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x=12-4
Subtract 4 from both sides.
x=8
Subtract 4 from 12 to get 8.
Examples
Quadratic equation
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Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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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 ) }
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Limits
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