900=x-(x*0.4)

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Solution for 900=x-(x*0.4) equation:


Simplifying
900 = x + -1(x * 0.4)

Reorder the terms for easier multiplication:
900 = x + -1(0.4x)

Remove parenthesis around (0.4x)
900 = x + -1 * 0.4x

Multiply -1 * 0.4
900 = x + -0.4x

Combine like terms: x + -0.4x = 0.6x
900 = 0.6x

Solving
900 = 0.6x

Solving for variable 'x'.

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

Add '-0.6x' to each side of the equation.
900 + -0.6x = 0.6x + -0.6x

Combine like terms: 0.6x + -0.6x = 0.0
900 + -0.6x = 0.0

Add '-900' to each side of the equation.
900 + -900 + -0.6x = 0.0 + -900

Combine like terms: 900 + -900 = 0
0 + -0.6x = 0.0 + -900
-0.6x = 0.0 + -900

Combine like terms: 0.0 + -900 = -900
-0.6x = -900

Divide each side by '-0.6'.
x = 1500

Simplifying
x = 1500

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