12=3x+3(x+2)

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Solution for 12=3x+3(x+2) equation:


Simplifying
12 = 3x + 3(x + 2)

Reorder the terms:
12 = 3x + 3(2 + x)
12 = 3x + (2 * 3 + x * 3)
12 = 3x + (6 + 3x)

Reorder the terms:
12 = 6 + 3x + 3x

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

Solving
12 = 6 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
12 + -6x = 6 + 6x + -6x

Combine like terms: 6x + -6x = 0
12 + -6x = 6 + 0
12 + -6x = 6

Add '-12' to each side of the equation.
12 + -12 + -6x = 6 + -12

Combine like terms: 12 + -12 = 0
0 + -6x = 6 + -12
-6x = 6 + -12

Combine like terms: 6 + -12 = -6
-6x = -6

Divide each side by '-6'.
x = 1

Simplifying
x = 1

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