12
23
32
32
Twelve (12)
3/8 x 32 is 12.
Three eighths divided by 1 and one third = 9/32
32
A common denominator is 32.
32/8=4 x 3 = 12
One eighth of 32 is 4, so three eighths is 3 x 4 = 12
There are 8 eighths to a 1. Therefore the 4 in the question is made up of 4 x 8 = 32 eighths. 32 + 7 = 39 eighths
10/16, 15/24, 20/32
32/40 - 15/40 = 17/40