9+13z-6=6z+21-2z

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Solution for 9+13z-6=6z+21-2z equation:


Simplifying
9 + 13z + -6 = 6z + 21 + -2z

Reorder the terms:
9 + -6 + 13z = 6z + 21 + -2z

Combine like terms: 9 + -6 = 3
3 + 13z = 6z + 21 + -2z

Reorder the terms:
3 + 13z = 21 + 6z + -2z

Combine like terms: 6z + -2z = 4z
3 + 13z = 21 + 4z

Solving
3 + 13z = 21 + 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.
3 + 13z + -4z = 21 + 4z + -4z

Combine like terms: 13z + -4z = 9z
3 + 9z = 21 + 4z + -4z

Combine like terms: 4z + -4z = 0
3 + 9z = 21 + 0
3 + 9z = 21

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

Combine like terms: 3 + -3 = 0
0 + 9z = 21 + -3
9z = 21 + -3

Combine like terms: 21 + -3 = 18
9z = 18

Divide each side by '9'.
z = 2

Simplifying
z = 2

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