-19=z-21

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Solution for -19=z-21 equation:


Simplifying
-19 = z + -21

Reorder the terms:
-19 = -21 + z

Solving
-19 = -21 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
-19 + -1z = -21 + z + -1z

Combine like terms: z + -1z = 0
-19 + -1z = -21 + 0
-19 + -1z = -21

Add '19' to each side of the equation.
-19 + 19 + -1z = -21 + 19

Combine like terms: -19 + 19 = 0
0 + -1z = -21 + 19
-1z = -21 + 19

Combine like terms: -21 + 19 = -2
-1z = -2

Divide each side by '-1'.
z = 2

Simplifying
z = 2

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