3.1x-12.85=7.3

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Solution for 3.1x-12.85=7.3 equation: 


Simplifying
3.1x + -12.85 = 7.3

Reorder the terms:
-12.85 + 3.1x = 7.3

Solving
-12.85 + 3.1x = 7.3

Solving for variable 'x'.

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

Add '12.85' to each side of the equation.
-12.85 + 12.85 + 3.1x = 7.3 + 12.85

Combine like terms: -12.85 + 12.85 = 0.00
0.00 + 3.1x = 7.3 + 12.85
3.1x = 7.3 + 12.85

Combine like terms: 7.3 + 12.85 = 20.15
3.1x = 20.15

Divide each side by '3.1'.
x = 6.5

Simplifying
x = 6.5

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