X-b=3b

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Solution for X-b=3b equation: 


Simplifying
X + -1b = 3b

Solving
X + -1b = 3b

Solving for variable 'X'.

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

Add 'b' to each side of the equation.
X + -1b + b = 3b + b

Combine like terms: -1b + b = 0
X + 0 = 3b + b
X = 3b + b

Combine like terms: 3b + b = 4b
X = 4b

Simplifying
X = 4b

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