3X-27=21

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Solution for 3X-27=21 equation: 


Simplifying
3X + -27 = 21

Reorder the terms:
-27 + 3X = 21

Solving
-27 + 3X = 21

Solving for variable 'X'.

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

Add '27' to each side of the equation.
-27 + 27 + 3X = 21 + 27

Combine like terms: -27 + 27 = 0
0 + 3X = 21 + 27
3X = 21 + 27

Combine like terms: 21 + 27 = 48
3X = 48

Divide each side by '3'.
X = 16

Simplifying
X = 16

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