7(3x+6)=-(-x-2)

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Solution for 7(3x+6)=-(-x-2) equation:


Simplifying
7(3x + 6) = -1(-1x + -2)

Reorder the terms:
7(6 + 3x) = -1(-1x + -2)
(6 * 7 + 3x * 7) = -1(-1x + -2)
(42 + 21x) = -1(-1x + -2)

Reorder the terms:
42 + 21x = -1(-2 + -1x)
42 + 21x = (-2 * -1 + -1x * -1)
42 + 21x = (2 + 1x)

Solving
42 + 21x = 2 + 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
42 + 21x + -1x = 2 + 1x + -1x

Combine like terms: 21x + -1x = 20x
42 + 20x = 2 + 1x + -1x

Combine like terms: 1x + -1x = 0
42 + 20x = 2 + 0
42 + 20x = 2

Add '-42' to each side of the equation.
42 + -42 + 20x = 2 + -42

Combine like terms: 42 + -42 = 0
0 + 20x = 2 + -42
20x = 2 + -42

Combine like terms: 2 + -42 = -40
20x = -40

Divide each side by '20'.
x = -2

Simplifying
x = -2

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