x+7=2(x-1)

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Solution for x+7=2(x-1) equation:


Simplifying
x + 7 = 2(x + -1)

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

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

Solving
7 + x = -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.
7 + x + -2x = -2 + 2x + -2x

Combine like terms: x + -2x = -1x
7 + -1x = -2 + 2x + -2x

Combine like terms: 2x + -2x = 0
7 + -1x = -2 + 0
7 + -1x = -2

Add '-7' to each side of the equation.
7 + -7 + -1x = -2 + -7

Combine like terms: 7 + -7 = 0
0 + -1x = -2 + -7
-1x = -2 + -7

Combine like terms: -2 + -7 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9

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