Add 10/70 and 80/20
1st number: 10/70, 2nd number: 4 0/20
10/70 + 80/20 is 29/7.
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,
10/70 = 10 × 2/70 × 2 = 20/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
80/20 = 80 × 7/20 × 7 = 560/140 - Add the two like fractions:
20/140 + 560/140 = 20 + 560/140 = 580/140 - 580/140 simplified gives 29/7
- So, 10/70 + 80/20 = 29/7
In mixed form: 41/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70+80/20 10/70+80/40 30/70+80/20 10/70+80/60 50/70+80/20