X=3(x-21)

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Solution for X=3(x-21) equation: 


Simplifying
X = 3(x + -21)

Reorder the terms:
X = 3(-21 + x)
X = (-21 * 3 + x * 3)
X = (-63 + 3x)

Solving
X = -63 + 3x

Solving for variable 'X'.

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

Simplifying
X = -63 + 3x

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