0.5-3.1=0.4

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Solution for 0.5-3.1=0.4 equation: 


Simplifying
0.5 + -3.1 = 0.4

Combine like terms: 0.5 + -3.1 = -2.6
-2.6 = 0.4

Solving
-2.6 = 0.4

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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