Add 20/18 and 72/10
1st number: 1 2/18, 2nd number: 7 2/10
20/18 + 72/10 is 374/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Add the two like fractions:
100/90 + 648/90 = 100 + 648/90 = 748/90 - 748/90 simplified gives 374/45
- So, 20/18 + 72/10 = 374/45
In mixed form: 814/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+72/10 20/36+72/10 20/18+72/20 60/18+72/10 20/54+72/10 20/18+72/30 20/90+72/10 20/18+72/50 20/18+72/70