.5x=.4x+9

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Solution for .5x=.4x+9 equation: 


Simplifying
0.5x = 0.4x + 9

Reorder the terms:
0.5x = 9 + 0.4x

Solving
0.5x = 9 + 0.4x

Solving for variable 'x'.

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

Add '-0.4x' to each side of the equation.
0.5x + -0.4x = 9 + 0.4x + -0.4x

Combine like terms: 0.5x + -0.4x = 0.1x
0.1x = 9 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
0.1x = 9 + 0.0
0.1x = 9

Divide each side by '0.1'.
x = 90

Simplifying
x = 90

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