0.4x-0.2(4-x)=3.1

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Solution for 0.4x-0.2(4-x)=3.1 equation: 


Simplifying
0.4x + -0.2(4 + -1x) = 3.1
0.4x + (4 * -0.2 + -1x * -0.2) = 3.1
0.4x + (-0.8 + 0.2x) = 3.1

Reorder the terms:
-0.8 + 0.4x + 0.2x = 3.1

Combine like terms: 0.4x + 0.2x = 0.6x
-0.8 + 0.6x = 3.1

Solving
-0.8 + 0.6x = 3.1

Solving for variable 'x'.

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

Add '0.8' to each side of the equation.
-0.8 + 0.8 + 0.6x = 3.1 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + 0.6x = 3.1 + 0.8
0.6x = 3.1 + 0.8

Combine like terms: 3.1 + 0.8 = 3.9
0.6x = 3.9

Divide each side by '0.6'.
x = 6.5

Simplifying
x = 6.5

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