[2(X+3)+(X-9)]=9

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Solution for [2(X+3)+(X-9)]=9 equation:


Simplifying
[2(X + 3) + (X + -9)] = 9

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

Reorder the terms:
[6 + 2X + (-9 + X)] = 9

Remove parenthesis around (-9 + X)
[6 + 2X + -9 + X] = 9

Reorder the terms:
[6 + -9 + 2X + X] = 9

Combine like terms: 6 + -9 = -3
[-3 + 2X + X] = 9

Combine like terms: 2X + X = 3X
[-3 + 3X] = 9

Remove brackets around [-3 + 3X]
-3 + 3X = 9

Solving
-3 + 3X = 9

Solving for variable 'X'.

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

Add '3' to each side of the equation.
-3 + 3 + 3X = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 3X = 9 + 3
3X = 9 + 3

Combine like terms: 9 + 3 = 12
3X = 12

Divide each side by '3'.
X = 4

Simplifying
X = 4

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