Add 21/30 and 35/4
1st number: 21/30, 2nd number: 8 3/4
21/30 + 35/4 is 189/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
35/4 = 35 × 15/4 × 15 = 525/60 - Add the two like fractions:
42/60 + 525/60 = 42 + 525/60 = 567/60 - 567/60 simplified gives 189/20
- So, 21/30 + 35/4 = 189/20
In mixed form: 99/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30+35/4 21/30+70/4 21/60+35/4 21/30+35/8 63/30+35/4 21/90+35/4 21/30+35/12 21/30+35/20 21/30+35/28