4z-z+2z-2z=15

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Solution for 4z-z+2z-2z=15 equation: 


Simplifying
4z + -1z + 2z + -2z = 15

Combine like terms: 4z + -1z = 3z
3z + 2z + -2z = 15

Combine like terms: 3z + 2z = 5z
5z + -2z = 15

Combine like terms: 5z + -2z = 3z
3z = 15

Solving
3z = 15

Solving for variable 'z'.

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

Divide each side by '3'.
z = 5

Simplifying
z = 5

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