.2x-.8y=0

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Solution for .2x-.8y=0 equation: 


Simplifying
0.2x + -0.8y = 0

Solving
0.2x + -0.8y = 0

Solving for variable 'x'.

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

Add '0.8y' to each side of the equation.
0.2x + -0.8y + 0.8y = 0 + 0.8y

Combine like terms: -0.8y + 0.8y = 0.0
0.2x + 0.0 = 0 + 0.8y
0.2x = 0 + 0.8y
Remove the zero:
0.2x = 0.8y

Divide each side by '0.2'.
x = 4y

Simplifying
x = 4y

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