.40*(x-1800)=x

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Solution for .40*(x-1800)=x equation:


Simplifying
0.40(x + -1800) = x

Reorder the terms:
0.40(-1800 + x) = x
(-1800 * 0.40 + x * 0.40) = x
(-720 + 0.40x) = x

Solving
-720 + 0.40x = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-720 + 0.40x + -1x = x + -1x

Combine like terms: 0.40x + -1x = -0.6x
-720 + -0.6x = x + -1x

Combine like terms: x + -1x = 0
-720 + -0.6x = 0

Add '720' to each side of the equation.
-720 + 720 + -0.6x = 0 + 720

Combine like terms: -720 + 720 = 0
0 + -0.6x = 0 + 720
-0.6x = 0 + 720

Combine like terms: 0 + 720 = 720
-0.6x = 720

Divide each side by '-0.6'.
x = -1200

Simplifying
x = -1200

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