40y-20x=-80

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Solution for 40y-20x=-80 equation: 


Simplifying
40y + -20x = -80

Reorder the terms:
-20x + 40y = -80

Solving
-20x + 40y = -80

Solving for variable 'x'.

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

Add '-40y' to each side of the equation.
-20x + 40y + -40y = -80 + -40y

Combine like terms: 40y + -40y = 0
-20x + 0 = -80 + -40y
-20x = -80 + -40y

Divide each side by '-20'.
x = 4 + 2y

Simplifying
x = 4 + 2y

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