30-4z=18

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Solution for 30-4z=18 equation:


Simplifying
30 + -4z = 18

Solving
30 + -4z = 18

Solving for variable 'z'.

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

Add '-30' to each side of the equation.
30 + -30 + -4z = 18 + -30

Combine like terms: 30 + -30 = 0
0 + -4z = 18 + -30
-4z = 18 + -30

Combine like terms: 18 + -30 = -12
-4z = -12

Divide each side by '-4'.
z = 3

Simplifying
z = 3

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