3x+8=-9

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Solution for 3x+8=-9 equation: 


Simplifying
3x + 8 = -9

Reorder the terms:
8 + 3x = -9

Solving
8 + 3x = -9

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 3x = -9 + -8

Combine like terms: 8 + -8 = 0
0 + 3x = -9 + -8
3x = -9 + -8

Combine like terms: -9 + -8 = -17
3x = -17

Divide each side by '3'.
x = -5.666666667

Simplifying
x = -5.666666667

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