8+9z-5=9z+21-6z

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Solution for 8+9z-5=9z+21-6z equation:


Simplifying
8 + 9z + -5 = 9z + 21 + -6z

Reorder the terms:
8 + -5 + 9z = 9z + 21 + -6z

Combine like terms: 8 + -5 = 3
3 + 9z = 9z + 21 + -6z

Reorder the terms:
3 + 9z = 21 + 9z + -6z

Combine like terms: 9z + -6z = 3z
3 + 9z = 21 + 3z

Solving
3 + 9z = 21 + 3z

Solving for variable 'z'.

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

Add '-3z' to each side of the equation.
3 + 9z + -3z = 21 + 3z + -3z

Combine like terms: 9z + -3z = 6z
3 + 6z = 21 + 3z + -3z

Combine like terms: 3z + -3z = 0
3 + 6z = 21 + 0
3 + 6z = 21

Add '-3' to each side of the equation.
3 + -3 + 6z = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 6z = 21 + -3
6z = 21 + -3

Combine like terms: 21 + -3 = 18
6z = 18

Divide each side by '6'.
z = 3

Simplifying
z = 3

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