15=3(x-1)

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


Simplifying
15 = 3(x + -1)

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

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

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

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

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

Combine like terms: -3 + -15 = -18
-3x = -18

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

Simplifying
x = 6

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