3x+18=9x-30

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Solution for 3x+18=9x-30 equation:


Simplifying
3x + 18 = 9x + -30

Reorder the terms:
18 + 3x = 9x + -30

Reorder the terms:
18 + 3x = -30 + 9x

Solving
18 + 3x = -30 + 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 = -30 + 9x + -9x

Combine like terms: 3x + -9x = -6x
18 + -6x = -30 + 9x + -9x

Combine like terms: 9x + -9x = 0
18 + -6x = -30 + 0
18 + -6x = -30

Add '-18' to each side of the equation.
18 + -18 + -6x = -30 + -18

Combine like terms: 18 + -18 = 0
0 + -6x = -30 + -18
-6x = -30 + -18

Combine like terms: -30 + -18 = -48
-6x = -48

Divide each side by '-6'.
x = 8

Simplifying
x = 8

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