9+4x=-x-21

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Solution for 9+4x=-x-21 equation:


Simplifying
9 + 4x = -1x + -21

Reorder the terms:
9 + 4x = -21 + -1x

Solving
9 + 4x = -21 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
9 + 4x + x = -21 + -1x + x

Combine like terms: 4x + x = 5x
9 + 5x = -21 + -1x + x

Combine like terms: -1x + x = 0
9 + 5x = -21 + 0
9 + 5x = -21

Add '-9' to each side of the equation.
9 + -9 + 5x = -21 + -9

Combine like terms: 9 + -9 = 0
0 + 5x = -21 + -9
5x = -21 + -9

Combine like terms: -21 + -9 = -30
5x = -30

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

Simplifying
x = -6

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