-4.5x-y=3

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Solution for -4.5x-y=3 equation: 


Simplifying
-4.5x + -1y = 3

Solving
-4.5x + -1y = 3

Solving for variable 'x'.

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

Add 'y' to each side of the equation.
-4.5x + -1y + y = 3 + y

Combine like terms: -1y + y = 0
-4.5x + 0 = 3 + y
-4.5x = 3 + y

Divide each side by '-4.5'.
x = -0.6666666667 + -0.2222222222y

Simplifying
x = -0.6666666667 + -0.2222222222y

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