20-z=1

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Solution for 20-z=1 equation: 


Simplifying
20 + -1z = 1

Solving
20 + -1z = 1

Solving for variable 'z'.

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

Add '-20' to each side of the equation.
20 + -20 + -1z = 1 + -20

Combine like terms: 20 + -20 = 0
0 + -1z = 1 + -20
-1z = 1 + -20

Combine like terms: 1 + -20 = -19
-1z = -19

Divide each side by '-1'.
z = 19

Simplifying
z = 19

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