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

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


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

Reorder the terms:
3x + 9(9 + x) = 3(6x + 3)
3x + (9 * 9 + x * 9) = 3(6x + 3)
3x + (81 + 9x) = 3(6x + 3)

Reorder the terms:
81 + 3x + 9x = 3(6x + 3)

Combine like terms: 3x + 9x = 12x
81 + 12x = 3(6x + 3)

Reorder the terms:
81 + 12x = 3(3 + 6x)
81 + 12x = (3 * 3 + 6x * 3)
81 + 12x = (9 + 18x)

Solving
81 + 12x = 9 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
81 + 12x + -18x = 9 + 18x + -18x

Combine like terms: 12x + -18x = -6x
81 + -6x = 9 + 18x + -18x

Combine like terms: 18x + -18x = 0
81 + -6x = 9 + 0
81 + -6x = 9

Add '-81' to each side of the equation.
81 + -81 + -6x = 9 + -81

Combine like terms: 81 + -81 = 0
0 + -6x = 9 + -81
-6x = 9 + -81

Combine like terms: 9 + -81 = -72
-6x = -72

Divide each side by '-6'.
x = 12

Simplifying
x = 12

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