9z-7z=20

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Solution for 9z-7z=20 equation: 


Simplifying
9z + -7z = 20

Combine like terms: 9z + -7z = 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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