Ross and Gabby sold boxes of cookies for their soccer team fundraiser. Ross sold b boxes of cookies, and Gabby sold 35 boxes of cookies. Together they sold a total of 69 boxes of cookies.
Okay. So Rose and Gabby sold 69 boxes of cookies together and Gabby sold 35 of them. To find the amount Rose sold, let's set up an equation. 35 + b = 69. Let's subtract 35 from both sides. When you do that, you get that b = 34. Rose sold 34 boxes of cookies for their soccer team fundraiser.
