.3x-.9y=20

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Solution for .3x-.9y=20 equation: 


Simplifying
0.3x + -0.9y = 20

Solving
0.3x + -0.9y = 20

Solving for variable 'x'.

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

Add '0.9y' to each side of the equation.
0.3x + -0.9y + 0.9y = 20 + 0.9y

Combine like terms: -0.9y + 0.9y = 0.0
0.3x + 0.0 = 20 + 0.9y
0.3x = 20 + 0.9y

Divide each side by '0.3'.
x = 66.66666667 + 3y

Simplifying
x = 66.66666667 + 3y

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