(x+3x)=900

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Solution for (x+3x)=900 equation: 


Simplifying
(x + 3x) = 900

Combine like terms: x + 3x = 4x
(4x) = 900
(4x) = 900

Solving
(4x) = 900

Solving for variable 'x'.

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

Divide each side by '4'.
x = 225

Simplifying
x = 225

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