57=4z-9

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Solution for 57=4z-9 equation:


Simplifying
57 = 4z + -9

Reorder the terms:
57 = -9 + 4z

Solving
57 = -9 + 4z

Solving for variable 'z'.

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

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

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

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

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

Combine like terms: -9 + -57 = -66
-4z = -66

Divide each side by '-4'.
z = 16.5

Simplifying
z = 16.5

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