9(x+9)=(x+12)

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Solution for 9(x+9)=(x+12) equation:


Simplifying
9(x + 9) = (x + 12)

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

Reorder the terms:
81 + 9x = (12 + x)

Remove parenthesis around (12 + x)
81 + 9x = 12 + x

Solving
81 + 9x = 12 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
81 + 9x + -1x = 12 + x + -1x

Combine like terms: 9x + -1x = 8x
81 + 8x = 12 + x + -1x

Combine like terms: x + -1x = 0
81 + 8x = 12 + 0
81 + 8x = 12

Add '-81' to each side of the equation.
81 + -81 + 8x = 12 + -81

Combine like terms: 81 + -81 = 0
0 + 8x = 12 + -81
8x = 12 + -81

Combine like terms: 12 + -81 = -69
8x = -69

Divide each side by '8'.
x = -8.625

Simplifying
x = -8.625

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