Solve for z
z\leq 6
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z+9\leq 15
Swap sides so that all variable terms are on the left hand side. This changes the sign direction.
z\leq 15-9
Subtract 9 from both sides.
z\leq 6
Subtract 9 from 15 to get 6.
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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