.4x+.9=.3-.2y

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Solution for .4x+.9=.3-.2y equation:


Simplifying
0.4x + 0.9 = 0.3 + -0.2y

Reorder the terms:
0.9 + 0.4x = 0.3 + -0.2y

Solving
0.9 + 0.4x = 0.3 + -0.2y

Solving for variable 'x'.

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

Add '-0.9' to each side of the equation.
0.9 + -0.9 + 0.4x = 0.3 + -0.9 + -0.2y

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + 0.4x = 0.3 + -0.9 + -0.2y
0.4x = 0.3 + -0.9 + -0.2y

Combine like terms: 0.3 + -0.9 = -0.6
0.4x = -0.6 + -0.2y

Divide each side by '0.4'.
x = -1.5 + -0.5y

Simplifying
x = -1.5 + -0.5y

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