12+3x-9x=-18

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Solution for 12+3x-9x=-18 equation:


Simplifying
12 + 3x + -9x = -18

Combine like terms: 3x + -9x = -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 = -30
-6x = -30

Divide each side by '-6'.
x = 5

Simplifying
x = 5

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