18=-2X-12

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Solution for 18=-2X-12 equation:


Simplifying
18 = -2X + -12

Reorder the terms:
18 = -12 + -2X

Solving
18 = -12 + -2X

Solving for variable 'X'.

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

Add '2X' to each side of the equation.
18 + 2X = -12 + -2X + 2X

Combine like terms: -2X + 2X = 0
18 + 2X = -12 + 0
18 + 2X = -12

Add '-18' to each side of the equation.
18 + -18 + 2X = -12 + -18

Combine like terms: 18 + -18 = 0
0 + 2X = -12 + -18
2X = -12 + -18

Combine like terms: -12 + -18 = -30
2X = -30

Divide each side by '2'.
X = -15

Simplifying
X = -15

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