6x+12=3x-18

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Solution for 6x+12=3x-18 equation:


Simplifying
6x + 12 = 3x + -18

Reorder the terms:
12 + 6x = 3x + -18

Reorder the terms:
12 + 6x = -18 + 3x

Solving
12 + 6x = -18 + 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.
12 + 6x + -3x = -18 + 3x + -3x

Combine like terms: 6x + -3x = 3x
12 + 3x = -18 + 3x + -3x

Combine like terms: 3x + -3x = 0
12 + 3x = -18 + 0
12 + 3x = -18

Add '-12' to each side of the equation.
12 + -12 + 3x = -18 + -12

Combine like terms: 12 + -12 = 0
0 + 3x = -18 + -12
3x = -18 + -12

Combine like terms: -18 + -12 = -30
3x = -30

Divide each side by '3'.
x = -10

Simplifying
x = -10

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