Solve for z
z=0
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z=5z
Combine 4z and z to get 5z.
z-5z=0
Subtract 5z from both sides.
-4z=0
Combine z and -5z to get -4z.
z=0
Product of two numbers is equal to 0 if at least one of them is 0. Since -4 is not equal to 0, z must be equal to 0.
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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