Answer:
[tex]\frac{1}{4}[/tex]
Step-by-step explanation:
Approach 1 (trickier)
[tex]\frac{2}{3}*\frac{7}{12}*\frac{9}{14}\\ \\ \frac{2*7*9}{3*12*14}\\ \\ \frac{126}{504}\\ \\\frac{1}{4}[/tex]
Approach 2 (easier)
[tex]\frac{2}{3}*\frac{7}{12}*\frac{9}{14}\\\\\frac{2}{14}*\frac{7}{12}*\frac{9}{3}\\ \\ \frac{1}{7}*\frac{7}{12}*3\\ \\ \frac{1}{12}*3\\ \\ \frac{3}{12}\\ \\\frac{1}{4}[/tex]