-21-2x=-6

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Solution for -21-2x=-6 equation: 


Simplifying
-21 + -2x = -6

Solving
-21 + -2x = -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 + -2x = -6 + 21

Combine like terms: -21 + 21 = 0
0 + -2x = -6 + 21
-2x = -6 + 21

Combine like terms: -6 + 21 = 15
-2x = 15

Divide each side by '-2'.
x = -7.5

Simplifying
x = -7.5

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