12x-66+15=3x+12

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Solution for 12x-66+15=3x+12 equation:


Simplifying
12x + -66 + 15 = 3x + 12

Reorder the terms:
-66 + 15 + 12x = 3x + 12

Combine like terms: -66 + 15 = -51
-51 + 12x = 3x + 12

Reorder the terms:
-51 + 12x = 12 + 3x

Solving
-51 + 12x = 12 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-51 + 12x + -3x = 12 + 3x + -3x

Combine like terms: 12x + -3x = 9x
-51 + 9x = 12 + 3x + -3x

Combine like terms: 3x + -3x = 0
-51 + 9x = 12 + 0
-51 + 9x = 12

Add '51' to each side of the equation.
-51 + 51 + 9x = 12 + 51

Combine like terms: -51 + 51 = 0
0 + 9x = 12 + 51
9x = 12 + 51

Combine like terms: 12 + 51 = 63
9x = 63

Divide each side by '9'.
x = 7

Simplifying
x = 7

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