3x+12=-(x-18)

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Solution for 3x+12=-(x-18) equation:


Simplifying
3x + 12 = -1(x + -18)

Reorder the terms:
12 + 3x = -1(x + -18)

Reorder the terms:
12 + 3x = -1(-18 + x)
12 + 3x = (-18 * -1 + x * -1)
12 + 3x = (18 + -1x)

Solving
12 + 3x = 18 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
12 + 3x + x = 18 + -1x + x

Combine like terms: 3x + x = 4x
12 + 4x = 18 + -1x + x

Combine like terms: -1x + x = 0
12 + 4x = 18 + 0
12 + 4x = 18

Add '-12' to each side of the equation.
12 + -12 + 4x = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 4x = 18 + -12
4x = 18 + -12

Combine like terms: 18 + -12 = 6
4x = 6

Divide each side by '4'.
x = 1.5

Simplifying
x = 1.5

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