Add 75/30 and 21/20
1st number: 2 15/30, 2nd number: 1 1/20
75/30 + 21/20 is 71/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
75/30 = 75 × 2/30 × 2 = 150/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
21/20 = 21 × 3/20 × 3 = 63/60 - Add the two like fractions:
150/60 + 63/60 = 150 + 63/60 = 213/60 - 213/60 simplified gives 71/20
- So, 75/30 + 21/20 = 71/20
In mixed form: 311/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/30+42/20 75/60+21/20 75/30+21/40 75/30+63/20 75/90+21/20 75/30+21/60