Question

yesterday Josh sold some boxes of greeting cards. today he sold seven boxes .if he sold 25 boxes in all , how many did he sell

Answer 1

It's Quite Simple :) Glad to Help :P
Today he sold = 7 Boxes
Total sold =25 Boxes
So, Boxes he Sold yesterday =25-7 =18 Boxes

Answer 2

If he sold 25 boxes in all and he sold 7 today then he would of sold 25 - 7 boxes yesterday. Josh sold 18 boxes yesterday.

Today = 7

Yesterday = 18

Total = 25

7 + x = 25, when x = Yesterdays sold boxes.

Hope this helps :)