z+21=19

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Solution for z+21=19 equation: 


Simplifying
z + 21 = 19

Reorder the terms:
21 + z = 19

Solving
21 + z = 19

Solving for variable 'z'.

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

Add '-21' to each side of the equation.
21 + -21 + z = 19 + -21

Combine like terms: 21 + -21 = 0
0 + z = 19 + -21
z = 19 + -21

Combine like terms: 19 + -21 = -2
z = -2

Simplifying
z = -2

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