9x-15=3(x+9)

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


Simplifying
9x + -15 = 3(x + 9)

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

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

Solving
-15 + 9x = 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 + 9x + -3x = 27 + 3x + -3x

Combine like terms: 9x + -3x = 6x
-15 + 6x = 27 + 3x + -3x

Combine like terms: 3x + -3x = 0
-15 + 6x = 27 + 0
-15 + 6x = 27

Add '15' to each side of the equation.
-15 + 15 + 6x = 27 + 15

Combine like terms: -15 + 15 = 0
0 + 6x = 27 + 15
6x = 27 + 15

Combine like terms: 27 + 15 = 42
6x = 42

Divide each side by '6'.
x = 7

Simplifying
x = 7

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