Add 20/27 and 42/10
1st number: 20/27, 2nd number: 4 2/10
20/27 + 42/10 is 667/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 10 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
20/27 = 20 × 10/27 × 10 = 200/270 - Likewise, for the 2nd fraction, since 10 × 27 = 270,
42/10 = 42 × 27/10 × 27 = 1134/270 - Add the two like fractions:
200/270 + 1134/270 = 200 + 1134/270 = 1334/270 - 1334/270 simplified gives 667/135
- So, 20/27 + 42/10 = 667/135
In mixed form: 4127/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27+42/10 20/27+84/10 20/54+42/10 20/27+42/20 60/27+42/10 20/81+42/10 20/27+42/30 20/27+42/50 20/27+42/70