18=3+(3x-6)

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


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

Reorder the terms:
18 = 3 + (-6 + 3x)

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

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

Solving
18 = -3 + 3x

Solving for variable 'x'.

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

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

Combine like terms: 3x + -3x = 0
18 + -3x = -3 + 0
18 + -3x = -3

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

Combine like terms: 18 + -18 = 0
0 + -3x = -3 + -18
-3x = -3 + -18

Combine like terms: -3 + -18 = -21
-3x = -21

Divide each side by '-3'.
x = 7

Simplifying
x = 7

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