6(3x+3)-9(3x-6)=3x+18

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Solution for 6(3x+3)-9(3x-6)=3x+18 equation:


Simplifying
6(3x + 3) + -9(3x + -6) = 3x + 18

Reorder the terms:
6(3 + 3x) + -9(3x + -6) = 3x + 18
(3 * 6 + 3x * 6) + -9(3x + -6) = 3x + 18
(18 + 18x) + -9(3x + -6) = 3x + 18

Reorder the terms:
18 + 18x + -9(-6 + 3x) = 3x + 18
18 + 18x + (-6 * -9 + 3x * -9) = 3x + 18
18 + 18x + (54 + -27x) = 3x + 18

Reorder the terms:
18 + 54 + 18x + -27x = 3x + 18

Combine like terms: 18 + 54 = 72
72 + 18x + -27x = 3x + 18

Combine like terms: 18x + -27x = -9x
72 + -9x = 3x + 18

Reorder the terms:
72 + -9x = 18 + 3x

Solving
72 + -9x = 18 + 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.
72 + -9x + -3x = 18 + 3x + -3x

Combine like terms: -9x + -3x = -12x
72 + -12x = 18 + 3x + -3x

Combine like terms: 3x + -3x = 0
72 + -12x = 18 + 0
72 + -12x = 18

Add '-72' to each side of the equation.
72 + -72 + -12x = 18 + -72

Combine like terms: 72 + -72 = 0
0 + -12x = 18 + -72
-12x = 18 + -72

Combine like terms: 18 + -72 = -54
-12x = -54

Divide each side by '-12'.
x = 4.5

Simplifying
x = 4.5

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