23z-2=21z+4

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Solution for 23z-2=21z+4 equation:


Simplifying
23z + -2 = 21z + 4

Reorder the terms:
-2 + 23z = 21z + 4

Reorder the terms:
-2 + 23z = 4 + 21z

Solving
-2 + 23z = 4 + 21z

Solving for variable 'z'.

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

Add '-21z' to each side of the equation.
-2 + 23z + -21z = 4 + 21z + -21z

Combine like terms: 23z + -21z = 2z
-2 + 2z = 4 + 21z + -21z

Combine like terms: 21z + -21z = 0
-2 + 2z = 4 + 0
-2 + 2z = 4

Add '2' to each side of the equation.
-2 + 2 + 2z = 4 + 2

Combine like terms: -2 + 2 = 0
0 + 2z = 4 + 2
2z = 4 + 2

Combine like terms: 4 + 2 = 6
2z = 6

Divide each side by '2'.
z = 3

Simplifying
z = 3

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