z-21=30

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Solution for z-21=30 equation: 


Simplifying
z + -21 = 30

Reorder the terms:
-21 + z = 30

Solving
-21 + z = 30

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 = 30 + 21

Combine like terms: -21 + 21 = 0
0 + z = 30 + 21
z = 30 + 21

Combine like terms: 30 + 21 = 51
z = 51

Simplifying
z = 51

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