Add 15/70 and 50/20
1st number: 15/70, 2nd number: 2 10/20
15/70 + 50/20 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
50/20 = 50 × 7/20 × 7 = 350/140 - Add the two like fractions:
30/140 + 350/140 = 30 + 350/140 = 380/140 - 380/140 simplified gives 19/7
- So, 15/70 + 50/20 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70+50/20 15/70+50/40 45/70+50/20 15/70+50/60 75/70+50/20