3 / 1/7 = 3 x 7 = 21 Therefore, there are 21 sevenths in three wholes.
There are 28 sevenths in 4 wholes because 28/7 = 4
When starting out with two wholes, that makes 2*(7/7) or fourteen sevenths. Three seventh, or 3/7 is then added. Fourteen plus three makes for seventeen sevenths.
14 of them.
(6 × 7) ÷ 2 = 21
18 of them.
15
6 divided by 2/7 = 21
15
You can make 3 wholes
Ten fifths make two wholes.
6 sixths make a whole so 3 wholes would be 6 X 3 = 18 18 sixths make 3 wholes