[tex] \frac{2}{3}y+15=9 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Given} \\\\ \frac{2}{3}y+15-15=9-15 \ \ \ \ \ \ \ \ \text{Subtraction property} \\ \\ \frac{2}{3}y=-6 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Simplification} \\ \\ \frac{2}{3}y \cdot \frac{3}{2} =-6\cdot \frac{3}{2} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Multiplication property} \\\\ y=-9 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Simplification} [/tex]
