9-4z=57

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Solution for 9-4z=57 equation: 


Simplifying
9 + -4z = 57

Solving
9 + -4z = 57

Solving for variable 'z'.

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

Add '-9' to each side of the equation.
9 + -9 + -4z = 57 + -9

Combine like terms: 9 + -9 = 0
0 + -4z = 57 + -9
-4z = 57 + -9

Combine like terms: 57 + -9 = 48
-4z = 48

Divide each side by '-4'.
z = -12

Simplifying
z = -12

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