Step-by-step explanation: To simplify 1 2/3 as a fraction/ mixed number, multiply the whole number to the denominator, and add the numerator.
For example:
1 [tex]\frac{2}{3}[/tex]
1×3=3
3+2=5
Then, put your final added number on top of the denominator.
For example:
[tex]\frac{5}{3}[/tex]
Your final answer is [tex]\frac{5}{3}[/tex]
I hope this helps you!