0.4x+0.9y=3

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Solution for 0.4x+0.9y=3 equation: 


Simplifying
0.4x + 0.9y = 3

Solving
0.4x + 0.9y = 3

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.
0.4x + 0.9y + -0.9y = 3 + -0.9y

Combine like terms: 0.9y + -0.9y = 0.0
0.4x + 0.0 = 3 + -0.9y
0.4x = 3 + -0.9y

Divide each side by '0.4'.
x = 7.5 + -2.25y

Simplifying
x = 7.5 + -2.25y

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