No, 21 over 32 cannot be reduced.
8/32 = 1/4 Method: We note that '8' is a factor of '8' ( 8 x 1) and a factor of '32' ( 8 x 4) So you divide both numbers by '8' to arrive at '1/4' .
13/32
(4/7) / (8/21) = (4/7) x (21/8) = 84/56 = 1 and 1/2
1/4
1/4
4/21 * 7/32 = 4/3 * 1/32 = 1/3 * 1/8 = 1/24
4/(1/32) = 4 x 32 = 128
1/4*32 = 32/4 = 8
Factros of 21: 1, 3, 7, 21 Factors of 32: 1, 2, 4, 8, 16, 32
8 divided by 1/4 is 32.
4/21
4/32 = 1/8
4/32 = 1/8
8/32 + 16/32 = 1/4 + 2/4 = 3/4
32/128 = 1/4
8/32 = 1/4
4/21 or 4 over 21 because 1x4 is 4 and 7x3 is 21