4z-8=42

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Solution for 4z-8=42 equation: 


Simplifying
4z + -8 = 42

Reorder the terms:
-8 + 4z = 42

Solving
-8 + 4z = 42

Solving for variable 'z'.

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

Add '8' to each side of the equation.
-8 + 8 + 4z = 42 + 8

Combine like terms: -8 + 8 = 0
0 + 4z = 42 + 8
4z = 42 + 8

Combine like terms: 42 + 8 = 50
4z = 50

Divide each side by '4'.
z = 12.5

Simplifying
z = 12.5

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