7/21 in lowest term =1/3
To reduce to lowest term:
1. Get the GCF of 7 & 21
7 = 7
21=7 * 3
======
GCF=7
2. Divide the 7 & 21 by their GCF.
7
÷ 7 = 1
21
÷ 7 = 3
thus; lowest term is1/3.
21 over 12 in lowest terms = 7/4 or 13/4 or 1.75
18 over 21 in lowest terms is 6/7
75 over 21 in lowest terms = 25/7
21 over 49 in lowest terms is 3/7
7 over 11
7/12
7/20
3/7
21/27 = 7/9
6/7
21/30 = 7/10 in its lowest terms
21/24 in lowest terms is 7/8. Both the denominator and the numerator can be divided by 3.