Add 70/20 and 50/28
1st number: 3 10/20, 2nd number: 1 22/28
70/20 + 50/28 is 37/7.
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,
70/20 = 70 × 7/20 × 7 = 490/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
50/28 = 50 × 5/28 × 5 = 250/140 - Add the two like fractions:
490/140 + 250/140 = 490 + 250/140 = 740/140 - 740/140 simplified gives 37/7
- So, 70/20 + 50/28 = 37/7
In mixed form: 52/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+50/28 70/20+50/56 70/60+50/28 70/20+50/84