21z=4z+9

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Solution for 21z=4z+9 equation: 


Simplifying
21z = 4z + 9

Reorder the terms:
21z = 9 + 4z

Solving
21z = 9 + 4z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-4z' to each side of the equation.
21z + -4z = 9 + 4z + -4z

Combine like terms: 21z + -4z = 17z
17z = 9 + 4z + -4z

Combine like terms: 4z + -4z = 0
17z = 9 + 0
17z = 9

Divide each side by '17'.
z = 0.5294117647

Simplifying
z = 0.5294117647

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