x-3=12.4

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Solution for x-3=12.4 equation: 


Simplifying
x + -3 = 12.4

Reorder the terms:
-3 + x = 12.4

Solving
-3 + x = 12.4

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + x = 12.4 + 3

Combine like terms: -3 + 3 = 0
0 + x = 12.4 + 3
x = 12.4 + 3

Combine like terms: 12.4 + 3 = 15.4
x = 15.4

Simplifying
x = 15.4

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