Add 20/25 and 27/42
20/25 + 27/42 is 101/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
20/25 = 20 × 42/25 × 42 = 840/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
27/42 = 27 × 25/42 × 25 = 675/1050 - Add the two like fractions:
840/1050 + 675/1050 = 840 + 675/1050 = 1515/1050 - 1515/1050 simplified gives 101/70
- So, 20/25 + 27/42 = 101/70
In mixed form: 131/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25+27/42 20/25+54/42 20/50+27/42 20/25+27/84 60/25+27/42 20/25+81/42 20/75+27/42