6x-(-3x)+-3x+(-12)=-18

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


Simplifying
6x + -1(-3x) + -3x + (-12) = -18

Remove parenthesis around (-3x)
6x + -1 * -3x + -3x + (-12) = -18

Multiply -1 * -3
6x + 3x + -3x + (-12) = -18
6x + 3x + -3x + -12 = -18

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

Combine like terms: 6x + 3x = 9x
-12 + 9x + -3x = -18

Combine like terms: 9x + -3x = 6x
-12 + 6x = -18

Solving
-12 + 6x = -18

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 6x = -18 + 12

Combine like terms: -12 + 12 = 0
0 + 6x = -18 + 12
6x = -18 + 12

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

Divide each side by '6'.
x = -1

Simplifying
x = -1

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