15-11=2(x-1)

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Solution for 15-11=2(x-1) equation:


Simplifying
15 + -11 = 2(x + -1)

Combine like terms: 15 + -11 = 4
4 = 2(x + -1)

Reorder the terms:
4 = 2(-1 + x)
4 = (-1 * 2 + x * 2)
4 = (-2 + 2x)

Solving
4 = -2 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
4 + -2x = -2 + 2x + -2x

Combine like terms: 2x + -2x = 0
4 + -2x = -2 + 0
4 + -2x = -2

Add '-4' to each side of the equation.
4 + -4 + -2x = -2 + -4

Combine like terms: 4 + -4 = 0
0 + -2x = -2 + -4
-2x = -2 + -4

Combine like terms: -2 + -4 = -6
-2x = -6

Divide each side by '-2'.
x = 3

Simplifying
x = 3

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