Add 54/30 and 35/21
1st number: 1 24/30, 2nd number: 1 14/21
54/30 + 35/21 is 52/15.
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,
54/30 = 54 × 7/30 × 7 = 378/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
35/21 = 35 × 10/21 × 10 = 350/210 - Add the two like fractions:
378/210 + 350/210 = 378 + 350/210 = 728/210 - 728/210 simplified gives 52/15
- So, 54/30 + 35/21 = 52/15
In mixed form: 37/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+70/21 54/60+35/21 54/30+35/42 54/90+35/21 54/30+35/63