12+3x=-6x-15

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Solution for 12+3x=-6x-15 equation:


Simplifying
12 + 3x = -6x + -15

Reorder the terms:
12 + 3x = -15 + -6x

Solving
12 + 3x = -15 + -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 + 3x + 6x = -15 + -6x + 6x

Combine like terms: 3x + 6x = 9x
12 + 9x = -15 + -6x + 6x

Combine like terms: -6x + 6x = 0
12 + 9x = -15 + 0
12 + 9x = -15

Add '-12' to each side of the equation.
12 + -12 + 9x = -15 + -12

Combine like terms: 12 + -12 = 0
0 + 9x = -15 + -12
9x = -15 + -12

Combine like terms: -15 + -12 = -27
9x = -27

Divide each side by '9'.
x = -3

Simplifying
x = -3

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