Saved Bookmarks
| 1. |
what is the common difference in which a 21-7 equal to 84 |
| Answer» a+20d-(a+6d)=84a+20d-a-6d =8420d-6d=84 ( a and -a were cancel)14d =84d=84/14d=6 so,d is equal to the 6 | |