Solve for x
x=15
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x=19-4
Subtract 4 from both sides.
x=15
Subtract 4 from 19 to get 15.
Examples
Quadratic equation
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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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