Add 27/20 and 42/80
1st number: 1 7/20, 2nd number: 42/80
27/20 + 42/80 is 15/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
27/20 = 27 × 4/20 × 4 = 108/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Add the two like fractions:
108/80 + 42/80 = 108 + 42/80 = 150/80 - 150/80 simplified gives 15/8
- So, 27/20 + 42/80 = 15/8
In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20+42/80 27/20+84/80 27/40+42/80 81/20+42/80 27/60+42/80