23z-18z-30=9-21z+13z

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Solution for 23z-18z-30=9-21z+13z equation:


Simplifying
23z + -18z + -30 = 9 + -21z + 13z

Reorder the terms:
-30 + 23z + -18z = 9 + -21z + 13z

Combine like terms: 23z + -18z = 5z
-30 + 5z = 9 + -21z + 13z

Combine like terms: -21z + 13z = -8z
-30 + 5z = 9 + -8z

Solving
-30 + 5z = 9 + -8z

Solving for variable 'z'.

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

Add '8z' to each side of the equation.
-30 + 5z + 8z = 9 + -8z + 8z

Combine like terms: 5z + 8z = 13z
-30 + 13z = 9 + -8z + 8z

Combine like terms: -8z + 8z = 0
-30 + 13z = 9 + 0
-30 + 13z = 9

Add '30' to each side of the equation.
-30 + 30 + 13z = 9 + 30

Combine like terms: -30 + 30 = 0
0 + 13z = 9 + 30
13z = 9 + 30

Combine like terms: 9 + 30 = 39
13z = 39

Divide each side by '13'.
z = 3

Simplifying
z = 3

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