-x-21=6

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Solution for -x-21=6 equation:


Simplifying
-1x + -21 = 6

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

Solving
-21 + -1x = 6

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -1x = 6 + 21

Combine like terms: -21 + 21 = 0
0 + -1x = 6 + 21
-1x = 6 + 21

Combine like terms: 6 + 21 = 27
-1x = 27

Divide each side by '-1'.
x = -27

Simplifying
x = -27

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