Add 9/10 and 20/28
9/10 + 20/28 is 113/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 10 × 14 = 140,
9/10 = 9 × 14/10 × 14 = 126/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
20/28 = 20 × 5/28 × 5 = 100/140 - Add the two like fractions:
126/140 + 100/140 = 126 + 100/140 = 226/140 - 226/140 simplified gives 113/70
- So, 9/10 + 20/28 = 113/70
In mixed form: 143/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/10+20/28 9/10+40/28 9/20+20/28 9/10+20/56 27/10+20/28 9/10+60/28 9/30+20/28 9/10+20/84 45/10+20/28 9/50+20/28 63/10+20/28 9/70+20/28