100-x=100-0.4x

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Solution for 100-x=100-0.4x equation:


Simplifying
100 + -1x = 100 + -0.4x

Add '-100' to each side of the equation.
100 + -100 + -1x = 100 + -100 + -0.4x

Combine like terms: 100 + -100 = 0
0 + -1x = 100 + -100 + -0.4x
-1x = 100 + -100 + -0.4x

Combine like terms: 100 + -100 = 0
-1x = 0 + -0.4x
-1x = -0.4x

Solving
-1x = -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.
-1x + 0.4x = -0.4x + 0.4x

Combine like terms: -1x + 0.4x = -0.6x
-0.6x = -0.4x + 0.4x

Combine like terms: -0.4x + 0.4x = 0.0
-0.6x = 0.0

Divide each side by '-0.6'.
x = 0

Simplifying
x = 0

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