X(x+3x)=28

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Solution for X(x+3x)=28 equation: 


Simplifying
X(x + 3x) = 28

Combine like terms: x + 3x = 4x
X(4x) = 28

Remove parenthesis around (4x)
X * 4x = 28

Reorder the terms for easier multiplication:
4X * x = 28

Multiply X * x
4xX = 28

Solving
4xX = 28

Solving for variable 'x'.

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

Divide each side by '4X'.
x = 7X-1

Simplifying
x = 7X-1

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