3(X-2)-21=0

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Solution for 3(X-2)-21=0 equation:


Simplifying
3(X + -2) + -21 = 0

Reorder the terms:
3(-2 + X) + -21 = 0
(-2 * 3 + X * 3) + -21 = 0
(-6 + 3X) + -21 = 0

Reorder the terms:
-6 + -21 + 3X = 0

Combine like terms: -6 + -21 = -27
-27 + 3X = 0

Solving
-27 + 3X = 0

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 = 0 + 27

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

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

Divide each side by '3'.
X = 9

Simplifying
X = 9

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