3(3x)-9=12+15

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Solution for 3(3x)-9=12+15 equation:


Simplifying
3(3x) + -9 = 12 + 15

Remove parenthesis around (3x)
3 * 3x + -9 = 12 + 15

Multiply 3 * 3
9x + -9 = 12 + 15

Reorder the terms:
-9 + 9x = 12 + 15

Combine like terms: 12 + 15 = 27
-9 + 9x = 27

Solving
-9 + 9x = 27

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 9x = 27 + 9

Combine like terms: -9 + 9 = 0
0 + 9x = 27 + 9
9x = 27 + 9

Combine like terms: 27 + 9 = 36
9x = 36

Divide each side by '9'.
x = 4

Simplifying
x = 4

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