9+12x=6+15(x-1)

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Solution for 9+12x=6+15(x-1) equation:


Simplifying
9 + 12x = 6 + 15(x + -1)

Reorder the terms:
9 + 12x = 6 + 15(-1 + x)
9 + 12x = 6 + (-1 * 15 + x * 15)
9 + 12x = 6 + (-15 + 15x)

Combine like terms: 6 + -15 = -9
9 + 12x = -9 + 15x

Solving
9 + 12x = -9 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
9 + 12x + -15x = -9 + 15x + -15x

Combine like terms: 12x + -15x = -3x
9 + -3x = -9 + 15x + -15x

Combine like terms: 15x + -15x = 0
9 + -3x = -9 + 0
9 + -3x = -9

Add '-9' to each side of the equation.
9 + -9 + -3x = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -3x = -9 + -9
-3x = -9 + -9

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

Divide each side by '-3'.
x = 6

Simplifying
x = 6

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