15=-3(x-1+9)

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Solution for 15=-3(x-1+9) equation: 


Simplifying
15 = -3(x + -1 + 9)

Reorder the terms:
15 = -3(-1 + 9 + x)

Combine like terms: -1 + 9 = 8
15 = -3(8 + x)
15 = (8 * -3 + x * -3)
15 = (-24 + -3x)

Solving
15 = -24 + -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 = -24 + -3x + 3x

Combine like terms: -3x + 3x = 0
15 + 3x = -24 + 0
15 + 3x = -24

Add '-15' to each side of the equation.
15 + -15 + 3x = -24 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = -24 + -15
3x = -24 + -15

Combine like terms: -24 + -15 = -39
3x = -39

Divide each side by '3'.
x = -13

Simplifying
x = -13

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