Hi there!
<u><em>FACTS</em></u><em> :</em>
<em>Two-thirds is written like this in a fraction : 2/3 </em>
<em>The word "of" is the same thing as a multiplication sign (×).</em>
<em>The sum is the result of an addition between 2 numbers or more.</em>
<u>STEPS TO ANSWER:</u>
Here's another way to formulate this : <em>The result of adding 122 and 98 together is multiplied by two-thirds.</em>
Now that you know all these information, you can put everything together and form your expression (do not forget the parentheses, otherwise the answer will not be accurate) :
2/3 × (122 + 98) → ANSWER
There you go! I really hope this helped, if there's anything just let me know! :)