12.1=0.8-z

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Solution for 12.1=0.8-z equation: 


Simplifying
12.1 = 0.8 + -1z

Solving
12.1 = 0.8 + -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.
12.1 + z = 0.8 + -1z + z

Combine like terms: -1z + z = 0
12.1 + z = 0.8 + 0
12.1 + z = 0.8

Add '-12.1' to each side of the equation.
12.1 + -12.1 + z = 0.8 + -12.1

Combine like terms: 12.1 + -12.1 = 0.0
0.0 + z = 0.8 + -12.1
z = 0.8 + -12.1

Combine like terms: 0.8 + -12.1 = -11.3
z = -11.3

Simplifying
z = -11.3

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