7z-2z=20

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Solution for 7z-2z=20 equation: 


Simplifying
7z + -2z = 20

Combine like terms: 7z + -2z = 5z
5z = 20

Solving
5z = 20

Solving for variable 'z'.

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

Divide each side by '5'.
z = 4

Simplifying
z = 4

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