3x+18=9x-18

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


Simplifying
3x + 18 = 9x + -18

Reorder the terms:
18 + 3x = 9x + -18

Reorder the terms:
18 + 3x = -18 + 9x

Solving
18 + 3x = -18 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
18 + 3x + -9x = -18 + 9x + -9x

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

Combine like terms: 9x + -9x = 0
18 + -6x = -18 + 0
18 + -6x = -18

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

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

Combine like terms: -18 + -18 = -36
-6x = -36

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

Simplifying
x = 6

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