8x+9=-x

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Solution for 8x+9=-x equation:


Simplifying
8x + 9 = -1x

Reorder the terms:
9 + 8x = -1x

Solving
9 + 8x = -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 + 8x + x = -1x + x

Combine like terms: 8x + x = 9x
9 + 9x = -1x + x

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

Add '-9' to each side of the equation.
9 + -9 + 9x = 0 + -9

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

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

Divide each side by '9'.
x = -1

Simplifying
x = -1

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