x+21=-5x-9

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Solution for x+21=-5x-9 equation:


Simplifying
x + 21 = -5x + -9

Reorder the terms:
21 + x = -5x + -9

Reorder the terms:
21 + x = -9 + -5x

Solving
21 + x = -9 + -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.
21 + x + 5x = -9 + -5x + 5x

Combine like terms: x + 5x = 6x
21 + 6x = -9 + -5x + 5x

Combine like terms: -5x + 5x = 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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