2(X-3)=21+-3

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


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

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

Combine like terms: 21 + -3 = 18
-6 + 2X = 18

Solving
-6 + 2X = 18

Solving for variable 'X'.

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

Add '6' to each side of the equation.
-6 + 6 + 2X = 18 + 6

Combine like terms: -6 + 6 = 0
0 + 2X = 18 + 6
2X = 18 + 6

Combine like terms: 18 + 6 = 24
2X = 24

Divide each side by '2'.
X = 12

Simplifying
X = 12

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