z-z+z+3z=20

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Solution for z-z+z+3z=20 equation: 


Simplifying
z + -1z + z + 3z = 20

Combine like terms: z + -1z = 0
0 + z + 3z = 20
z + 3z = 20

Combine like terms: z + 3z = 4z
4z = 20

Solving
4z = 20

Solving for variable 'z'.

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

Divide each side by '4'.
z = 5

Simplifying
z = 5

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