7z=180-2z

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Solution for 7z=180-2z equation: 


Simplifying
7z = 180 + -2z

Solving
7z = 180 + -2z

Solving for variable 'z'.

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

Add '2z' to each side of the equation.
7z + 2z = 180 + -2z + 2z

Combine like terms: 7z + 2z = 9z
9z = 180 + -2z + 2z

Combine like terms: -2z + 2z = 0
9z = 180 + 0
9z = 180

Divide each side by '9'.
z = 20

Simplifying
z = 20

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