z+z=4

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Solution for z+z=4 equation: 


Simplifying
z + z = 4

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

Solving
2z = 4

Solving for variable 'z'.

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

Divide each side by '2'.
z = 2

Simplifying
z = 2

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