Add 20/30 and 48/21
1st number: 20/30, 2nd number: 2 6/21
20/30 + 48/21 is 62/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
48/21 = 48 × 10/21 × 10 = 480/210 - Add the two like fractions:
140/210 + 480/210 = 140 + 480/210 = 620/210 - 620/210 simplified gives 62/21
- So, 20/30 + 48/21 = 62/21
In mixed form: 220/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+48/21 20/30+96/21 20/60+48/21 20/30+48/42 60/30+48/21 20/90+48/21 20/30+48/63