0.4x-3.1=0.5

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Solution for 0.4x-3.1=0.5 equation: 


Simplifying
0.4x + -3.1 = 0.5

Reorder the terms:
-3.1 + 0.4x = 0.5

Solving
-3.1 + 0.4x = 0.5

Solving for variable 'x'.

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

Add '3.1' to each side of the equation.
-3.1 + 3.1 + 0.4x = 0.5 + 3.1

Combine like terms: -3.1 + 3.1 = 0.0
0.0 + 0.4x = 0.5 + 3.1
0.4x = 0.5 + 3.1

Combine like terms: 0.5 + 3.1 = 3.6
0.4x = 3.6

Divide each side by '0.4'.
x = 9

Simplifying
x = 9

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