5=21-z

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Solution for 5=21-z equation:


Simplifying
5 = 21 + -1z

Solving
5 = 21 + -1z

Solving for variable 'z'.

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

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

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

Add '-5' to each side of the equation.
5 + -5 + z = 21 + -5

Combine like terms: 5 + -5 = 0
0 + z = 21 + -5
z = 21 + -5

Combine like terms: 21 + -5 = 16
z = 16

Simplifying
z = 16

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