21=-6x-3-6

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Solution for 21=-6x-3-6 equation:


Simplifying
21 = -6x + -3 + -6

Reorder the terms:
21 = -3 + -6 + -6x

Combine like terms: -3 + -6 = -9
21 = -9 + -6x

Solving
21 = -9 + -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.
21 + 6x = -9 + -6x + 6x

Combine like terms: -6x + 6x = 0
21 + 6x = -9 + 0
21 + 6x = -9

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

Combine like terms: 21 + -21 = 0
0 + 6x = -9 + -21
6x = -9 + -21

Combine like terms: -9 + -21 = -30
6x = -30

Divide each side by '6'.
x = -5

Simplifying
x = -5

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