Add 21/10 and 30/56
1st number: 2 1/10, 2nd number: 30/56
21/10 + 30/56 is 369/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 10 × 28 = 280,
21/10 = 21 × 28/10 × 28 = 588/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
30/56 = 30 × 5/56 × 5 = 150/280 - Add the two like fractions:
588/280 + 150/280 = 588 + 150/280 = 738/280 - 738/280 simplified gives 369/140
- So, 21/10 + 30/56 = 369/140
In mixed form: 289/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+30/56 21/10+60/56 21/20+30/56 63/10+30/56 21/10+90/56 21/30+30/56 21/50+30/56 21/70+30/56