Add 30/28 and 72/45
1st number: 1 2/28, 2nd number: 1 27/45
30/28 + 72/45 is 187/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
30/28 = 30 × 45/28 × 45 = 1350/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
72/45 = 72 × 28/45 × 28 = 2016/1260 - Add the two like fractions:
1350/1260 + 2016/1260 = 1350 + 2016/1260 = 3366/1260 - 3366/1260 simplified gives 187/70
- So, 30/28 + 72/45 = 187/70
In mixed form: 247/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28+72/45 30/56+72/45 30/28+72/90 90/28+72/45 30/84+72/45