z+11=20

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Solution for z+11=20 equation: 


Simplifying
z + 11 = 20

Reorder the terms:
11 + z = 20

Solving
11 + z = 20

Solving for variable 'z'.

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

Add '-11' to each side of the equation.
11 + -11 + z = 20 + -11

Combine like terms: 11 + -11 = 0
0 + z = 20 + -11
z = 20 + -11

Combine like terms: 20 + -11 = 9
z = 9

Simplifying
z = 9

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