Answer:
[tex]\frac{17}{21}[/tex]
Step-by-step explanation:
[tex]\frac{1}{7}[/tex] + [tex]\frac{2}{3}[/tex] ( multiply [tex]\frac{1}{7}[/tex] by 3 and [tex]\frac{2}{3}[/tex] by 7 to get a common denominator)
[tex]\frac{3}{21}[/tex] + [tex]\frac{14}{21}[/tex] = [tex]\frac{17}{21}[/tex]