Solve for h
h=3
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-18=h-21
Multiply both sides of the equation by 3.
h-21=-18
Swap sides so that all variable terms are on the left hand side.
h=-18+21
Add 21 to both sides.
h=3
Add -18 and 21 to get 3.
Examples
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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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