15=3(x+9)

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Solution for 15=3(x+9) equation: 


Simplifying
15 = 3(x + 9)

Reorder the terms:
15 = 3(9 + x)
15 = (9 * 3 + x * 3)
15 = (27 + 3x)

Solving
15 = 27 + 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.
15 + -3x = 27 + 3x + -3x

Combine like terms: 3x + -3x = 0
15 + -3x = 27 + 0
15 + -3x = 27

Add '-15' to each side of the equation.
15 + -15 + -3x = 27 + -15

Combine like terms: 15 + -15 = 0
0 + -3x = 27 + -15
-3x = 27 + -15

Combine like terms: 27 + -15 = 12
-3x = 12

Divide each side by '-3'.
x = -4

Simplifying
x = -4

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