0.4x-0.4(5-x)=0.8

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Solution for 0.4x-0.4(5-x)=0.8 equation:


Simplifying
0.4x + -0.4(5 + -1x) = 0.8
0.4x + (5 * -0.4 + -1x * -0.4) = 0.8
0.4x + (-2 + 0.4x) = 0.8

Reorder the terms:
-2 + 0.4x + 0.4x = 0.8

Combine like terms: 0.4x + 0.4x = 0.8x
-2 + 0.8x = 0.8

Solving
-2 + 0.8x = 0.8

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 0.8x = 0.8 + 2

Combine like terms: -2 + 2 = 0
0 + 0.8x = 0.8 + 2
0.8x = 0.8 + 2

Combine like terms: 0.8 + 2 = 2.8
0.8x = 2.8

Divide each side by '0.8'.
x = 3.5

Simplifying
x = 3.5

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