To solve the equation \( x + \frac{x}{9} = -\frac{10}{3} \), follow these steps:
Combine the terms on the left side: First, we can get a common denominator for the terms that contain \( x \). The term \( x \) can be rewritten with a denominator of 9:
\[ x = \frac{9x}{9} \]
Now we can combine:
\[ \frac{9x}{9} + \frac{x}{9} = -\frac{10}{3} \]
This simplifies to:
\[ \frac{10x}{9} = -\frac{10}{3} \]
Clear the fraction by cross-multiplying: Multiply both sides by 9 to eliminate the denominator:
\[ 10x = -\frac{10}{3} \times 9 \]
Simplifying the right side gives:
\[ 10x = -30 \]
Solve for \( x \): Divide both sides by 10:
\[ x = -3 \]
Thus, the solution to the equation \( x + \frac{x}{9} = -\frac{10}{3} \) is:
\[ \boxed{-3} \]
