.4x-0.4y=4

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Solution for .4x-0.4y=4 equation: 


Simplifying
0.4x + -0.4y = 4

Solving
0.4x + -0.4y = 4

Solving for variable 'x'.

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

Add '0.4y' to each side of the equation.
0.4x + -0.4y + 0.4y = 4 + 0.4y

Combine like terms: -0.4y + 0.4y = 0.0
0.4x + 0.0 = 4 + 0.4y
0.4x = 4 + 0.4y

Divide each side by '0.4'.
x = 10 + y

Simplifying
x = 10 + y

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