Compare 21/42 and 70/32, Which fraction is greater?

Compare 21/42 and 70/32

1^st number: 21/42, 2^nd number: 2 6/32

21/42 is smaller than 70/32

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 42 × 16 = 672,
21/42 = 21 × 16/42 × 16 = 336/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
70/32 = 70 × 21/32 × 21 = 1470/672
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
336/672 < 1470/672 or 21/42 < 70/32

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad