Add 20/54 and 42/20
1st number: 20/54, 2nd number: 2 2/20
20/54 + 42/20 is 667/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
20/54 = 20 × 10/54 × 10 = 200/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540 - Add the two like fractions:
200/540 + 1134/540 = 200 + 1134/540 = 1334/540 - 1334/540 simplified gives 667/270
- So, 20/54 + 42/20 = 667/270
In mixed form: 2127/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/54+42/20 20/54+84/20 20/54+42/40 60/54+42/20 20/54+42/60