-12=3(x+4)+3x

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Solution for -12=3(x+4)+3x equation:


Simplifying
-12 = 3(x + 4) + 3x

Reorder the terms:
-12 = 3(4 + x) + 3x
-12 = (4 * 3 + x * 3) + 3x
-12 = (12 + 3x) + 3x

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

Solving
-12 = 12 + 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 = 12 + 6x + -6x

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

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

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

Combine like terms: 12 + 12 = 24
-6x = 24

Divide each side by '-6'.
x = -4

Simplifying
x = -4

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