-3[x+(9x+7)]=6-(3x+9)

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Solution for -3[x+(9x+7)]=6-(3x+9) equation:


Simplifying
-3[x + (9x + 7)] = 6 + -1(3x + 9)

Reorder the terms:
-3[x + (7 + 9x)] = 6 + -1(3x + 9)

Remove parenthesis around (7 + 9x)
-3[x + 7 + 9x] = 6 + -1(3x + 9)

Reorder the terms:
-3[7 + x + 9x] = 6 + -1(3x + 9)

Combine like terms: x + 9x = 10x
-3[7 + 10x] = 6 + -1(3x + 9)
[7 * -3 + 10x * -3] = 6 + -1(3x + 9)
[-21 + -30x] = 6 + -1(3x + 9)

Reorder the terms:
-21 + -30x = 6 + -1(9 + 3x)
-21 + -30x = 6 + (9 * -1 + 3x * -1)
-21 + -30x = 6 + (-9 + -3x)

Combine like terms: 6 + -9 = -3
-21 + -30x = -3 + -3x

Solving
-21 + -30x = -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.
-21 + -30x + 3x = -3 + -3x + 3x

Combine like terms: -30x + 3x = -27x
-21 + -27x = -3 + -3x + 3x

Combine like terms: -3x + 3x = 0
-21 + -27x = -3 + 0
-21 + -27x = -3

Add '21' to each side of the equation.
-21 + 21 + -27x = -3 + 21

Combine like terms: -21 + 21 = 0
0 + -27x = -3 + 21
-27x = -3 + 21

Combine like terms: -3 + 21 = 18
-27x = 18

Divide each side by '-27'.
x = -0.6666666667

Simplifying
x = -0.6666666667

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