3. Solve for x in the following proportions. Your inswer must not be in decimal. Simplify into implest form if there is fraction. (1 pt. each) \( \frac{5}{9}=\frac{x}{18} \) \( \frac{15}{23}=\frac{9}{x} \) \( \frac{9}{9} \)

To solve for \( x \) in the first proportion \( \frac{5}{9}=\frac{x}{18} \), you can cross-multiply. This gives you \( 5 \times 18 = 9 \times x \), or \( 90 = 9x \). Dividing both sides by 9, we find \( x = 10 \). In the second proportion \( \frac{15}{23}=\frac{9}{x} \), we again use cross-multiplication: \( 15x = 23 \times 9 \). This results in \( 15x = 207 \). Dividing both sides by 15 gives \( x = \frac{207}{15} \) which simplifies to \( x = \frac{69}{5} \). Lastly, the fraction \( \frac{9}{9} \) simplifies to \( 1 \).