16.40=x-0.20*x

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Solution for 16.40=x-0.20*x equation: 


Simplifying
16.40 = x + -0.20x

Combine like terms: x + -0.20x = 0.8x
16.40 = 0.8x

Solving
16.40 = 0.8x

Solving for variable 'x'.

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

Add '-0.8x' to each side of the equation.
16.40 + -0.8x = 0.8x + -0.8x

Combine like terms: 0.8x + -0.8x = 0.0
16.40 + -0.8x = 0.0

Add '-16.40' to each side of the equation.
16.40 + -16.40 + -0.8x = 0.0 + -16.40

Combine like terms: 16.40 + -16.40 = 0.00
0.00 + -0.8x = 0.0 + -16.40
-0.8x = 0.0 + -16.40

Combine like terms: 0.0 + -16.40 = -16.4
-0.8x = -16.4

Divide each side by '-0.8'.
x = 20.5

Simplifying
x = 20.5

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