30y-40x=-120

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Solution for 30y-40x=-120 equation: 


Simplifying
30y + -40x = -120

Reorder the terms:
-40x + 30y = -120

Solving
-40x + 30y = -120

Solving for variable 'x'.

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

Add '-30y' to each side of the equation.
-40x + 30y + -30y = -120 + -30y

Combine like terms: 30y + -30y = 0
-40x + 0 = -120 + -30y
-40x = -120 + -30y

Divide each side by '-40'.
x = 3 + 0.75y

Simplifying
x = 3 + 0.75y

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