3x-3+9=12+15

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


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

Reorder the terms:
-3 + 9 + 3x = 12 + 15

Combine like terms: -3 + 9 = 6
6 + 3x = 12 + 15

Combine like terms: 12 + 15 = 27
6 + 3x = 27

Solving
6 + 3x = 27

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 + 3x = 27 + -6

Combine like terms: 6 + -6 = 0
0 + 3x = 27 + -6
3x = 27 + -6

Combine like terms: 27 + -6 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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