Step-by-step explanation:
What we'll be using:
The integer rule.
Rule: When a positive number is being subtracted by a negative number, the negative number changes to a positive.
Implying the rule:
[tex]1 \frac{2}{3} + 5 \frac{2}{3}[/tex]
Add:
[tex]1 \frac{2}{3} + 5 \frac{2}{3} = 7 \frac{1}{3} [/tex]
Third option is correct.
