-x-(8x-6)=6x+21

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Solution for -x-(8x-6)=6x+21 equation:


Simplifying
-1x + -1(8x + -6) = 6x + 21

Reorder the terms:
-1x + -1(-6 + 8x) = 6x + 21
-1x + (-6 * -1 + 8x * -1) = 6x + 21
-1x + (6 + -8x) = 6x + 21

Reorder the terms:
6 + -1x + -8x = 6x + 21

Combine like terms: -1x + -8x = -9x
6 + -9x = 6x + 21

Reorder the terms:
6 + -9x = 21 + 6x

Solving
6 + -9x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
6 + -9x + -6x = 21 + 6x + -6x

Combine like terms: -9x + -6x = -15x
6 + -15x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
6 + -15x = 21 + 0
6 + -15x = 21

Add '-6' to each side of the equation.
6 + -6 + -15x = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -15x = 21 + -6
-15x = 21 + -6

Combine like terms: 21 + -6 = 15
-15x = 15

Divide each side by '-15'.
x = -1

Simplifying
x = -1

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