6.4x-3.9=8.9

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Solution for 6.4x-3.9=8.9 equation: 


Simplifying
6.4x + -3.9 = 8.9

Reorder the terms:
-3.9 + 6.4x = 8.9

Solving
-3.9 + 6.4x = 8.9

Solving for variable 'x'.

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

Add '3.9' to each side of the equation.
-3.9 + 3.9 + 6.4x = 8.9 + 3.9

Combine like terms: -3.9 + 3.9 = 0.0
0.0 + 6.4x = 8.9 + 3.9
6.4x = 8.9 + 3.9

Combine like terms: 8.9 + 3.9 = 12.8
6.4x = 12.8

Divide each side by '6.4'.
x = 2

Simplifying
x = 2

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