7z-z-4z=20

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Solution for 7z-z-4z=20 equation: 


Simplifying
7z + -1z + -4z = 20

Combine like terms: 7z + -1z = 6z
6z + -4z = 20

Combine like terms: 6z + -4z = 2z
2z = 20

Solving
2z = 20

Solving for variable 'z'.

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

Divide each side by '2'.
z = 10

Simplifying
z = 10

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