z-8.4=4

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Solution for z-8.4=4 equation: 


Simplifying
z + -8.4 = 4

Reorder the terms:
-8.4 + z = 4

Solving
-8.4 + z = 4

Solving for variable 'z'.

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

Add '8.4' to each side of the equation.
-8.4 + 8.4 + z = 4 + 8.4

Combine like terms: -8.4 + 8.4 = 0.0
0.0 + z = 4 + 8.4
z = 4 + 8.4

Combine like terms: 4 + 8.4 = 12.4
z = 12.4

Simplifying
z = 12.4

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