.4xy+2y=9

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Solution for .4xy+2y=9 equation: 


Simplifying
0.4xy + 2y = 9

Solving
0.4xy + 2y = 9

Solving for variable 'x'.

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

Add '-2y' to each side of the equation.
0.4xy + 2y + -2y = 9 + -2y

Combine like terms: 2y + -2y = 0
0.4xy + 0 = 9 + -2y
0.4xy = 9 + -2y

Divide each side by '0.4y'.
x = 22.5y-1 + -5

Simplifying
x = 22.5y-1 + -5

Reorder the terms:
x = -5 + 22.5y-1

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