z+3.1=12.1

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Solution for z+3.1=12.1 equation: 


Simplifying
z + 3.1 = 12.1

Reorder the terms:
3.1 + z = 12.1

Solving
3.1 + z = 12.1

Solving for variable 'z'.

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

Add '-3.1' to each side of the equation.
3.1 + -3.1 + z = 12.1 + -3.1

Combine like terms: 3.1 + -3.1 = 0.0
0.0 + z = 12.1 + -3.1
z = 12.1 + -3.1

Combine like terms: 12.1 + -3.1 = 9
z = 9

Simplifying
z = 9

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