9-3(X-2)=21

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Solution for 9-3(X-2)=21 equation: 


Simplifying
9 + -3(X + -2) = 21

Reorder the terms:
9 + -3(-2 + X) = 21
9 + (-2 * -3 + X * -3) = 21
9 + (6 + -3X) = 21

Combine like terms: 9 + 6 = 15
15 + -3X = 21

Solving
15 + -3X = 21

Solving for variable 'X'.

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

Add '-15' to each side of the equation.
15 + -15 + -3X = 21 + -15

Combine like terms: 15 + -15 = 0
0 + -3X = 21 + -15
-3X = 21 + -15

Combine like terms: 21 + -15 = 6
-3X = 6

Divide each side by '-3'.
X = -2

Simplifying
X = -2

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