x-8.1=4

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Solution for x-8.1=4 equation: 


Simplifying
x + -8.1 = 4

Reorder the terms:
-8.1 + x = 4

Solving
-8.1 + x = 4

Solving for variable 'x'.

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

Add '8.1' to each side of the equation.
-8.1 + 8.1 + x = 4 + 8.1

Combine like terms: -8.1 + 8.1 = 0.0
0.0 + x = 4 + 8.1
x = 4 + 8.1

Combine like terms: 4 + 8.1 = 12.1
x = 12.1

Simplifying
x = 12.1

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