what is the answer
PLS i need help

Answer:
B. 2/3x+1/14
Step-by-step explanation:
1/3x+4/7+1/3x−1/2
=1/3x+4/7+1/3x+−1/2
Combine Like Terms:
=1/3x+4/7+1/3x+−1/2
=(1/3x+1/3x)+(4/7+−1/2)
=2/3x+1/14