Add 75/20 and 7/28
1st number: 3 15/20, 2nd number: 7/28
75/20 + 7/28 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
75/20 = 75 × 7/20 × 7 = 525/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
7/28 = 7 × 5/28 × 5 = 35/140 - Add the two like fractions:
525/140 + 35/140 = 525 + 35/140 = 560/140 - 560/140 simplified gives 4/1
- So, 75/20 + 7/28 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/20+14/28 75/40+7/28 75/20+7/56 75/20+21/28 75/60+7/28 75/20+7/84 75/20+35/28 75/20+49/28