20=12-4z

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Solution for 20=12-4z equation:


Simplifying
20 = 12 + -4z

Solving
20 = 12 + -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.
20 + 4z = 12 + -4z + 4z

Combine like terms: -4z + 4z = 0
20 + 4z = 12 + 0
20 + 4z = 12

Add '-20' to each side of the equation.
20 + -20 + 4z = 12 + -20

Combine like terms: 20 + -20 = 0
0 + 4z = 12 + -20
4z = 12 + -20

Combine like terms: 12 + -20 = -8
4z = -8

Divide each side by '4'.
z = -2

Simplifying
z = -2

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