21-6x=-21

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Solution for 21-6x=-21 equation: 


Simplifying
21 + -6x = -21

Solving
21 + -6x = -21

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 + -6x = -21 + -21

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

Combine like terms: -21 + -21 = -42
-6x = -42

Divide each side by '-6'.
x = 7

Simplifying
x = 7

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