9z-21=-21+5z

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Solution for 9z-21=-21+5z equation:


Simplifying
9z + -21 = -21 + 5z

Reorder the terms:
-21 + 9z = -21 + 5z

Add '21' to each side of the equation.
-21 + 21 + 9z = -21 + 21 + 5z

Combine like terms: -21 + 21 = 0
0 + 9z = -21 + 21 + 5z
9z = -21 + 21 + 5z

Combine like terms: -21 + 21 = 0
9z = 0 + 5z
9z = 5z

Solving
9z = 5z

Solving for variable 'z'.

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

Add '-5z' to each side of the equation.
9z + -5z = 5z + -5z

Combine like terms: 9z + -5z = 4z
4z = 5z + -5z

Combine like terms: 5z + -5z = 0
4z = 0

Divide each side by '4'.
z = 0

Simplifying
z = 0

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