4+2z=20

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Solution for 4+2z=20 equation: 


Simplifying
4 + 2z = 20

Solving
4 + 2z = 20

Solving for variable 'z'.

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

Add '-4' to each side of the equation.
4 + -4 + 2z = 20 + -4

Combine like terms: 4 + -4 = 0
0 + 2z = 20 + -4
2z = 20 + -4

Combine like terms: 20 + -4 = 16
2z = 16

Divide each side by '2'.
z = 8

Simplifying
z = 8

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