Add 75/8 and 25/21
1st number: 9 3/8, 2nd number: 1 4/21
75/8 + 25/21 is 1775/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
75/8 = 75 × 21/8 × 21 = 1575/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
25/21 = 25 × 8/21 × 8 = 200/168 - Add the two like fractions:
1575/168 + 200/168 = 1575 + 200/168 = 1775/168 - So, 75/8 + 25/21 = 1775/168
In mixed form: 1095/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/8+50/21 75/16+25/21 75/8+25/42 75/8+75/21 75/24+25/21 75/8+25/63 75/40+25/21 75/56+25/21