z+z+z+z=4z

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Solution for z+z+z+z=4z equation: 


Simplifying
z + z + z + z = 4z

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

Combine like terms: 2z + z = 3z
3z + z = 4z

Combine like terms: 3z + z = 4z
4z = 4z

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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