Add 27/10 and 20/40
1st number: 2 7/10, 2nd number: 20/40
27/10 + 20/40 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
27/10 = 27 × 4/10 × 4 = 108/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
20/40 = 20 × 1/40 × 1 = 20/40 - Add the two like fractions:
108/40 + 20/40 = 108 + 20/40 = 128/40 - 128/40 simplified gives 16/5
- So, 27/10 + 20/40 = 16/5
In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/10+20/40 27/20+20/40 27/10+20/80 81/10+20/40 27/10+60/40 27/30+20/40 27/50+20/40 27/70+20/40