Add 81/28 and 30/50
1st number: 2 25/28, 2nd number: 30/50
81/28 + 30/50 is 489/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
81/28 = 81 × 25/28 × 25 = 2025/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
30/50 = 30 × 14/50 × 14 = 420/700 - Add the two like fractions:
2025/700 + 420/700 = 2025 + 420/700 = 2445/700 - 2445/700 simplified gives 489/140
- So, 81/28 + 30/50 = 489/140
In mixed form: 369/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28+60/50 81/56+30/50 81/28+90/50 81/84+30/50