100(4-x)=900x

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Solution for 100(4-x)=900x equation:


Simplifying
100(4 + -1x) = 900x
(4 * 100 + -1x * 100) = 900x
(400 + -100x) = 900x

Solving
400 + -100x = 900x

Solving for variable 'x'.

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

Add '-900x' to each side of the equation.
400 + -100x + -900x = 900x + -900x

Combine like terms: -100x + -900x = -1000x
400 + -1000x = 900x + -900x

Combine like terms: 900x + -900x = 0
400 + -1000x = 0

Add '-400' to each side of the equation.
400 + -400 + -1000x = 0 + -400

Combine like terms: 400 + -400 = 0
0 + -1000x = 0 + -400
-1000x = 0 + -400

Combine like terms: 0 + -400 = -400
-1000x = -400

Divide each side by '-1000'.
x = 0.4

Simplifying
x = 0.4

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