6-(x+7)=8-5x-21

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Solution for 6-(x+7)=8-5x-21 equation:


Simplifying
6 + -1(x + 7) = 8 + -5x + -21

Reorder the terms:
6 + -1(7 + x) = 8 + -5x + -21
6 + (7 * -1 + x * -1) = 8 + -5x + -21
6 + (-7 + -1x) = 8 + -5x + -21

Combine like terms: 6 + -7 = -1
-1 + -1x = 8 + -5x + -21

Reorder the terms:
-1 + -1x = 8 + -21 + -5x

Combine like terms: 8 + -21 = -13
-1 + -1x = -13 + -5x

Solving
-1 + -1x = -13 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
-1 + -1x + 5x = -13 + -5x + 5x

Combine like terms: -1x + 5x = 4x
-1 + 4x = -13 + -5x + 5x

Combine like terms: -5x + 5x = 0
-1 + 4x = -13 + 0
-1 + 4x = -13

Add '1' to each side of the equation.
-1 + 1 + 4x = -13 + 1

Combine like terms: -1 + 1 = 0
0 + 4x = -13 + 1
4x = -13 + 1

Combine like terms: -13 + 1 = -12
4x = -12

Divide each side by '4'.
x = -3

Simplifying
x = -3

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