Add 10/20 and 72/70
1st number: 10/20, 2nd number: 1 2/70
10/20 + 72/70 is 107/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
72/70 = 72 × 2/70 × 2 = 144/140 - Add the two like fractions:
70/140 + 144/140 = 70 + 144/140 = 214/140 - 214/140 simplified gives 107/70
- So, 10/20 + 72/70 = 107/70
In mixed form: 137/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40+72/70 30/20+72/70 10/60+72/70 50/20+72/70 70/20+72/70